Category (Categories): A way to group your posts by subject.

Customizer: Found under Appearance > Customize. Here you can find different options your theme author allows you to control (ie. backgrounds, headers, logo, widgets,  fonts, colors, etc). The options you’ll have available depend on your theme

Dashboard:  The first page seen when a user logs in. Users can customize their dashboard to show what they’d like.

Gravatar: The image that appears next to your name when you comment or post. This can be changed under Users > Your Profile.

Pingback: A special type of comment that’s automatically created when you link to someone else’s blog post. A pingback lets the blogger know that someone has linked to them.

Profile: The information/bio you’ve provided to be shared publicly on the internet. This can include your username, first name, last name, and links to your website(s) or social network profiles.

Responsive Design: A theme that adjusts the site layout based on the size of the screen it’s viewed on — computer, tablet, or phone — so that the site always looks its best.

Shortcode: Snippets of code that allow you to extend the site functionality through plugins.

Sidebar: A column aligned to the left or right of your main content (i.e., your post or page content), where you can place additional information using widgets.

Tag (Tags): A way to characterize posts by subject matter (not to be confused with Categories). Tags are optional and posts can have multiple tags.

Tagline: A phrase usually shown beneath your blog or site title. Taglines aren’t mandatory, but are a great way to add some more context and personality to your site.

Theme: The files that make up the design and structure of a site.

Toolbar:  The bar across the top of a site with allows which allow you to perform different actions: access your blog’s dashboard, create a new post, review your notifications, and more. You will only see the toolbar while you’re signed in.

URL / Web Address: Also known as a web address, or the characters that you see in your web’s address bar.

Visual Editor: A tool for creating posts and pages that allows you to create, edit, and format your content.

Widget: Small tools that you allow you to extend the functionality and content of your site. Widgets do many different things, like letting readers see which of your posts is most popular or automatically displaying your Instagram photos. Often found in the sidebars and footer of a site.