integration vs group action

integration and group action both are nouns.

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

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

integration: the action of incorporating a racial or religious group into a community
group action: action taken by a group of people

integration (noun)	group action (noun)
the action of incorporating a racial or religious group into a community	action taken by a group of people
the act of combining into an integral whole
an operation used in the calculus whereby the integral of a function is determined