While the two terms are commonly used interchangeably, a blog is not the same as an article. Blogs tend to be more informal than articles and contain the author’s opinion written in the first person. Articles are typically fact-based, written from a neutral perspective, and rarely include the author’s personal opinions.  It’s also common for blogs to have loose grammar rules, whereas articles typically follow AP (Associated Press) style writing guidelines. Articles get published by newspapers, magazines, and academics. But anyone can publish a blog post.