Posts are the entries that display in reverse chronological order on your home page. In contrast to pages, posts usually have comments fields beneath them and are included in your site’s RSS feed.
The Posts Screen provides the facility to manage all the Posts in your site. Via this Screen, Posts can be edited, deleted, and viewed. Filtering, and searching, also makes it easy to quickly find Posts matching certain criteria.
Each post in WordPress is filed under one or more Categories. This aids in navigation and allows posts and to be grouped with others of similar content.