battle vs group action

battle and group action both are nouns.

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

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

battle (noun)	group action (noun)
a hostile meeting of opposing military forces in the course of a war	action taken by a group of people
an energetic attempt to achieve something
an open clash between two opposing groups (or individuals)

battle (verb)	group action (verb)
battle or contend against in or as if in a battle