cooperation vs group action

cooperation and group action both are nouns.

Word	Noun	Adjective	Verb	Adverb
cooperation	Yes	No	No	No
group action	Yes	No	No	No

As nouns, group action is a hypernym of cooperation; that is, group action is a word with a broader meaning than cooperation:

cooperation (noun)	group action (noun)
joint operation or action	action taken by a group of people
the practice of cooperating