Content types: content types are one of the main building blocks within a Drupal site, as the name suggests, content types hold content. However, different content types can hold different kinds of content.

Node: within Drupal, a node is a piece of content. All data stored via a content type is a node.

Taxonomy: The process of classifying content.

Vocabulary: A group of taxonomy terms to choose from when classifying content in a particular way, such as the list of all of the vendor categories on a farmers market site.

Taxonomy term: A term used to classify content, such as a tag or a category. See also Vocabulary.

Menus: collections of links; these links can be displayed as a list, as drop-down items.

Entity: an entity is a piece of data within a Drupal site. Nodes, users, comments, and taxonomy are all entities.

Fields: fields are used to store and display structured information.

Paragraph: similar to fields, a paragraph is a collection of defined fields contained within a paragraph, which can be repeated in the node.

Role: A named set of permissions that can be applied to a user account.

Permission: The ability to perform some action on the site, such as editing a particular type of content, or viewing user profiles.

User: A person interacting with the site, either logged-in or anonymous.