Should [coauthors] be a synonym of [authorship]?

Question

I just noticed that there are two highly similar but distinct tags on the main site:

1. authorship, which has 893 questions, and co-authors, autorship, and equal-authors as synonyms.
2. coauthors, which has 25 questions, no tag description, and no synonyms.

Since co-authors is a synonym of authorship, I think that either:

1. coauthors should be made a synonym of authorship (this seems most appropriate); or
2. co-authors and coauthors should be made synonyms of each other, with neither being a synonym of authorship.

Answer 1

Yes, your option 1 seems the most appropriate. Here, questions about co-authors are essentially questions about authorship, and I can hardly see a description of co-authors sufficiently different from that of authorship: I would thus consider 2 not a good option.

Moreover, the description of authorship already explicitly mentions problems of co-authorship:

Queries related to academic authorship, i.e., who should be an author, the order of authors, or special roles such as corresponding authorship.