military vs assault rifle

military and assault rifle both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
assault rifle	Yes	No	No	No

military (noun)	assault rifle (noun)
the military forces of a nation	any of the automatic rifles or semiautomatic rifles with large magazines designed for military use

military (adjective)	assault rifle (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