co-option vs naming

co-option and naming both are nouns.

Word	Noun	Adjective	Verb	Adverb
co-option	Yes	No	No	No
naming	Yes	Yes	No	No

As nouns, naming is a hypernym of co-option; that is, naming is a word with a broader meaning than co-option:

co-option: the act of appointing summarily (with or without the appointee's consent)
naming: the act of putting a person into a non-elective position

Other hypernyms of co-option include appointment, assignment, designation.

co-option (noun)	naming (noun)
the selection of a new member (usually by a vote of the existing membership)	the act of putting a person into a non-elective position
the act of appointing summarily (with or without the appointee's consent)	the verbal act of naming

co-option (adjective)	naming (adjective)
	inclined to or serving for the giving of names