military vs police action

military and police action both are nouns.

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

military (noun)	police action (noun)
the military forces of a nation	a local military action without declaration of war; against violators of international peace and order

military (adjective)	police 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