co-optation vs designation

co-optation and designation both are nouns.

Word	Noun	Adjective	Verb	Adverb
co-optation	Yes	No	No	No
designation	Yes	No	No	No

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

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

Other hypernyms of co-optation include appointment, assignment, naming.

co-optation (noun)	designation (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 act of designating or identifying something
	identifying word or words by which someone or something is called and classified or distinguished from others