Hosting terms can feel more complicated than the tasks themselves. This glossary explains common website, hosting, domain, DNS, email, WordPress, and security terms in everyday words so you can make better decisions and ask clearer questions.
You do not need to memorize every term. Use this as a reference when you see an unfamiliar setting, error message, or support article.
Your website is the collection of pages, images, text, code, forms, and features people see when they visit your domain.
Domain Name
A domain name is your website address, such as yourbusiness.ca. The domain does not hold the website by itself. It points people to the right website through DNS settings.
URL
A URL is the full address of a specific page or file online. For example, https://yourbusiness.ca/contact is a URL. The domain is only one part of it.
Tech Help Canada’s guide to URL basics explains this in more detail.
Web Hosting
Web hosting is the service that stores your website files and makes them available online. Without hosting, your domain may exist, but there is no website for visitors to load.
Website Builder
A website builder is a tool for creating pages without manually editing code. It usually includes design templates, editing tools, hosting-related setup, and publishing features.
WordPress
WordPress is a website platform used to build and manage websites. It has a dashboard where you can edit pages, publish posts, manage plugins, change themes, and adjust settings.
WordPress Dashboard
The WordPress dashboard is the admin area inside WordPress. It is where you manage the content and settings of a WordPress site. It is different from your hosting control panel.
cPanel
cPanel is a hosting control panel. It can manage hosting-level tasks such as files, databases, domains, backups, PHP settings, email-related tools, and application installers.
Hosting Account
A hosting account is the account or product area where your hosting plan is managed. This may include access to your control panel, billing status, domain connections, SSL, and other tools.
Domain and DNS Terms
DNS
DNS stands for Domain Name System. It is the set of instructions that tells the internet what to do with your domain. DNS can point your website to hosting, send email to your email provider, and verify other services.
Nameservers
Nameservers tell the internet where your domain’s DNS records are managed. Changing nameservers can move DNS control from one provider to another.
This is powerful, but it should be done carefully. If you change nameservers without recreating important records, your website, email, or other services can stop working.
DNS Record
A DNS record is one instruction inside your DNS settings. Different record types do different jobs.
A Record
An A record points a domain or subdomain to an IP address. It is often used to send website traffic to the server where the site is hosted.
CNAME Record
A CNAME record points one name to another name. For example, www may point to the main domain or to another service.
TXT Record
A TXT record stores text information in DNS. It is often used to verify domain ownership or support email authentication.
MX Record
An MX record tells the internet where to deliver email for your domain. If MX records are wrong, your website may still work while your email stops receiving messages.
DNS Propagation
DNS propagation is the time it takes for DNS changes to update across networks. Some changes appear quickly, while others take longer. During this period, different people may see different results.
Subdomain
A subdomain is an extra section before your main domain, such as shop.yourbusiness.ca or blog.yourbusiness.ca. Subdomains can point to different tools, websites, or areas of your business.
Email Terms
Business Email
Business email uses your domain, such as hello@yourbusiness.ca. It looks more professional than using a personal email address and gives your business more control over mailboxes and access.
SPF
SPF is an email authentication record that helps identify which mail servers are allowed to send email for your domain.
DKIM
DKIM adds a digital signature to outgoing email. It helps receiving mail systems confirm that a message was not altered and is allowed to represent your domain.
DMARC
DMARC works with SPF and DKIM. It tells receiving mail systems what to do when a message fails authentication checks.
Email Client
An email client is the app used to read and send email, such as Outlook, Apple Mail, or Gmail. The email client is not always the same thing as the email hosting provider.
Security Terms
SSL Certificate
An SSL certificate helps secure the connection between a visitor’s browser and your website. It is part of what allows your site to load with https://.
HTTPS
HTTPS is the secure version of HTTP. When SSL is working properly, your website should load using HTTPS.
Not Secure Warning
A “Not Secure” warning usually means the browser does not see a valid secure connection for the page. This can happen if SSL is missing, expired, not applied to the right domain, or if the page loads insecure content.
Mixed Content
Mixed content happens when a secure HTTPS page still loads some images, scripts, styles, or files over insecure HTTP. This can cause browser warnings even if SSL is installed.
Malware
Malware is harmful software or code. On websites, malware can be used to redirect visitors, create spam pages, steal data, or damage trust.
Website Firewall
A website firewall helps filter harmful traffic before it reaches your site. It is one layer of website security, not a replacement for updates, strong passwords, and backups.
WordPress and Website Management Terms
Theme
A WordPress theme controls much of the site’s design and layout. Changing themes can affect how pages look and how certain features work.
Plugin
A plugin adds functionality to WordPress. Plugins can be useful, but too many plugins, outdated plugins, or poorly built plugins can slow down or break a site.
Update
An update is a newer version of WordPress, a theme, a plugin, or server software. Updates can fix bugs and security issues, but they should be handled carefully on important business sites.
Backup
A backup is a saved copy of your website files and database. Backups are important before updates, migrations, redesigns, and troubleshooting.
Restore
A restore uses a backup to bring a website back to an earlier state. A restore can help after a failed update, broken plugin, accidental deletion, or other serious issue.
Migration
A migration is the process of moving a website from one hosting environment, domain, or platform to another. Migrations should be planned carefully, especially when email and DNS are involved.
Cache
A cache stores a saved version of content so it can load faster. Caching can improve performance, but it can also make you see an old version of a page after changes.
CDN
A CDN, or content delivery network, helps deliver website content from locations closer to visitors. It can improve speed and reliability for some sites.
Hosting and Server Terms
Server
A server is a computer system that stores and delivers website data. When someone visits your site, the server responds by sending the needed files and data.
Shared Hosting
Shared hosting means multiple websites use resources on the same server environment. It can be a practical starting point for many small business websites.
VPS
VPS stands for Virtual Private Server. It gives more control and dedicated resources than basic shared hosting, but it usually requires more technical responsibility.
Storage
Storage is the amount of space available for website files, images, email data, backups, and other account content, depending on the hosting product.
Bandwidth
Bandwidth generally refers to the amount of data transferred when people visit your website, download files, or load pages.
CPU and RAM
CPU and RAM are server resources that affect how much work your hosting environment can handle. Larger, busier, or more complex sites may need more resources.
PHP
PHP is a programming language used by many websites, including WordPress. Your hosting environment runs a specific PHP version. Some plugins, themes, or websites may require a newer version.
Database
A database stores structured information. WordPress uses a database for posts, pages, settings, users, and other site content.
MySQL
MySQL is a common type of database used by WordPress and many other websites.
FTP
FTP stands for File Transfer Protocol. It is a way to transfer files between your computer and a hosting account.
SFTP
SFTP is a more secure way to transfer files. If you need file access, SFTP is usually preferred over plain FTP when available.
Error and Troubleshooting Terms
404 Error
A 404 error means the page was not found. The URL may be wrong, the page may have been deleted, or a redirect may be missing.
403 Error
A 403 error means access is forbidden. This can be caused by permissions, security rules, or configuration settings.
500 Internal Server Error
A 500 error means something went wrong on the server side, but the browser does not know the exact cause. It can be related to code, plugins, PHP settings, permissions, or configuration files.
Error Establishing a Database Connection
This WordPress message means the site cannot connect to its database. The cause may be incorrect database details, database availability, or hosting-related configuration.
Redirect
A redirect sends visitors and search engines from one URL to another. Redirects are important when pages move, URLs change, or a site is redesigned.
Parked Domain
A parked domain is registered but not connected to a finished website. It may show a placeholder page until it is pointed somewhere else.
How to Use This Glossary
When you run into a hosting problem, identify which group the term belongs to. Domain and DNS issues affect where traffic goes. Hosting issues affect where the site lives and how it runs. WordPress issues affect the site content, theme, plugins, and dashboard. Email issues often depend on MX and authentication records. Security issues may involve SSL, malware, updates, or access control.
That simple sorting step can save time. Instead of treating every website problem as “the site is broken,” you can ask a more useful question: is this a domain issue, hosting issue, website issue, email issue, or security issue?
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