co-occur with vs attach to

co-occur with and attach to both are verbs.

Word	Noun	Adjective	Verb	Adverb
co-occur with	No	No	Yes	No
attach to	No	No	Yes	No

As verbs, attach to is a hypernym of co-occur with; that is, attach to is a word with a broader meaning than co-occur with:

Other hypernyms of co-occur with include accompany, come with, go with.

co-occur with (verb)	attach to (verb)
go or occur together	be part of
	be present or associated with an event or entity