What are Rel attributes?

URL nofollow attributes are used by webmasters to point to an outbound link within a particular type of content.

There are several rel tags, which are qualified by Google differently and can be used in ant combination.

• rel="sponsored" – a tag used for links to sponsored and paid content. 
• rel="ugc" – a tag used for links to user-generated content: comments, reviews, posts, etc. 
• rel="nofollow" – a tag used for links to non-endorsed content. This tag is used when Sponsored and UGC are not applicable.