vBulletin Manual - Terminology

It may be important that you understand some of the basic terms used by Blog, these are clarified below.

Blog – this is a personal page that a user can post entries too, you can find a definition on wikipedia here.
Entry – an entry is a post made to the blog of a user.
Categories – a category is used to allow the organisation of blog entries.
Draft – while creating an entry a user has the option to save it as a draft and post it at a later date.
Trackback / Pingback – trackback and pingback are methods for letting a web author know that you've linked to their document, it is common for blog entries to be interlinked across different sites.
Akismet – a system to scan any web content to identify if it is spam, you can read more at the Akismet site.

These terms are discussed in more detail in the appropriate sections.