This is the most basic element of a Drupal website. A Node is like a page though it also can be a section of a page.
Typically used to describe software, open source refers to something that is made available to the public so that users may modify and/or share as they wish. Examples of open source software are content management systems such as WordPress and Drupal.
This stands for “What you See Is What You Get” and refers to a web editor that allows you to make edits without having to know HTML or other types of code. Popular WYSIWYG editors include TinyMCE and CKEditor. Some editors can be used by both Drupal and WordPress.