A visitor to a Drupal website who is not currently logged in. Drupal considers any such visitor as being the anonymous user, with the user ID 0, and belonging to the anonymous user role.

The text, images, and other information on a web site. Besides nodes there is more content on a typical Drupal site, such as comments and file attachments.

Graphical user interface. A program interface that takes advantage of the computer’s graphics capabilities to make the program easier to use.

l10n #

A new bug or issue is assigned a priority based on its severity, frequency, risk and other predetermined factors, borrowed from medical term triage.

An application programming interface (API) is a particular set of rules (“code”) and specifications that software programs can follow to communicate with each other. Within Drupal there is the API Reference which contains documentation for developers. There is also a Form API and Field API

A section of the path for a page on a Drupal website. In the path /node/937 the first argument is “node”, and the second is “937”. Some modules, most notably Views, allow the use of “wildcard” arguments that allow a particular page to vary depending on context.

One of two content types that are enabled in the standard installation profile. Articles are used for time-sensitive content like news, press releases or blog posts. This content type is called "Article" in Drupal 7 and later, and "Story" in earlier versions of Drupal.

Api.drupal.org. API reference site for Drupal developer's documentation.

A Base theme is a well-written set of CSS and template files that a theme developer can make use of in a new custom theme. Theme developers can make sub themes to override the default base theme. Some of the popular base themes include Zen, Omega and AdaptiveTheme