Also called weblog: Web log, online diary, a personal log of thoughts. Blogs are often updated daily, or often.

A blog is a series of blog posts. It can have an overall theme, or can be about many different subjects.

You could loosely compare a blog to a book. The blog name would compare to a book title. The individual blog posts would be named individually, just as the individual chapters in a book have chapter titles that describe that chapter of the book. The book jacket is a decorative element that could compare to the style template, or decorative element of the blog. A blog is an entire collection of blog posts.