This tag is for questions about the usage of Drupal content types: managing, creating, filtering, displaying, and designing content types.
drupal-content-types is for questions about the usage of Drupal content types including managing, creating, filtering, displaying and designing content types.
A single web site could contain many types of content, such as informational pages, news items, polls, blog posts, real estate listings, etc. In Drupal, each item of content is called a node, and each node belongs to a single content type.
Content type defines various default settings for nodes of that type, such as whether the node is published automatically and whether comments are permitted.
Read more on drupal.org.