Difference between a blog post and a article

In this post I am going to mention the differences of a blog post and an article.
Blog Post

• Mostly your own opinion
• No interviews or research
• Short text
• Built around keywords
• Good spelling and grammar optional
• Casual writing style
• No editor involved; self-published
• Freelance pay rates usually very low

Articles

• Your opinion is not allowed
• Has interviews and research from credible experts and research firms
• Longer than 300 words
• Keywords not important
• Spelling and grammar are impeccable
• More sophisticated writing style
• An editor cleans it up for you; published by a print magazine
• Pay rates are high for a word and up

So a blog post is more better than a article as a blog post is free which an article you have to pay loads of money out.