Entries hold the content that you want to display on your web pages. Each entry has an Author, a Post Date, an Expiration Date (if desired), a status (enabled or disabled), and of course, content.
You can also create drafts of entries that live alongside the current live version of the entry.
Not all sections are created equal. Craft has three different types of sections:
Singles are used for one-off pages that have unique content requirements, such as:
Unlike the other section types, Singles only have one entry associated with them, and they don’t have an editable Author, Slug, Post Date, or Expiration Date.
Channels are used for streams of similar content, such as:
Structures are good for times when you need to store multiple similar entries, and sort them into a specific order. They can also be hierarchical. Examples include: