Drupal

Website content can be categorised into 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, which defines various default settings for nodes of that type, such as whether the node is published automatically and whether comments are permitted. With the later versions of Drupal, you can even create your own content types which include:
ARTICLES
Articles are generally used for information that is updated more frequently and often cross-referenced and categorized (such as news items or resources). By default, Articles are sorted with the most recent post at the top, but this can be customised with contributed modules.
BASIC PAGE
The Basic Page content type is enabled in Drupal in the default installation profile. Typically, Basic Pages are used for static content that can (but are not required to) be linked into the main navigation bar.
BLOG ENTRY
A Blog (short for weblog) is an online journal or diary, and the core Blog module allows registered users on your site to create their own blogs. Each entry in a user blog has the content type, Blog Entry.
COMMENTS
Comments are not actually nodes, hence, are technically not a "content type". Enabled by default, the Comment module allows site visitors to add comments (typically short notes and replies to other comments) to nodes on the site.
FORUM
A Forum node defines a topic for a forum discussion; whereby people can reply to the topic by using comments. Forum nodes are organised into subject areas via a Taxonomy (list of categories).
POLL
A Poll is a question that offers the visitor a set of multiple choice responses. A poll, once created, automatically provides a simple running count of the number of votes received for each response.