military vs military action

military and military action both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
military action	Yes	No	No	No

military (noun)	military action (noun)
the military forces of a nation	a military engagement

military (adjective)	military action (adjective)
associated with or performed by members of the armed services as contrasted with civilians
characteristic of or associated with soldiers or the military
of or relating to the study of the principles of warfare