Difference between tags & keywords

What is the main Difference between tags & keywords, please share your view ?

Keywords are actually a part of the content and are used to identify what the content is all about. On the other hand, tags are just placed by the creator of the content to describe what the content is and what it relates to.

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Keywords are used by search engines to identify what your blog and your blog articles are about. A search engine knows what terms are highly searched by users, and looks for those words and phrases on web pages.
Tags are self-assigned “labels” that you can use to categorize the posts on your blog.

Keywords are actually part of content and its is very useful for website ranking. Tags are also useful for content description.

Ok, Got It, Thanks for replying the informative information.

I think tags is related to blog platform, but keywords related to web based search term.