origin has 13 posts and a tag-wiki excerpt explaining when to use it.
etymology tag has 280 posts and a tag-wiki excerpt explaining when to use it.
Do we need the origin tag?
Technically, etymology is only about the origin of certain words, while origin comprises also the history of, e.g., grammatical features. However, for the latter we usually use history, though its tag-wiki excerpt is more restrictive, limiting it only to the history of words.
I thus propose to resolve this situation by: