manual of arms vs military

manual of arms and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
manual of arms	Yes	No	No	No
military	Yes	Yes	No	No

manual of arms (noun)	military (noun)
(military) a prescribed drill in handling a rifle	the military forces of a nation

manual of arms (adjective)	military (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