socialization vs group action

socialization and group action both are nouns.

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

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

socialization (noun)	group action (noun)
the adoption of the behavior patterns of the surrounding culture	action taken by a group of people
the act of meeting for social purposes
the action of establishing on a socialist basis