armed service vs military

armed service and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
armed service	Yes	No	No	No
military	Yes	Yes	No	No

armed service (noun)	military (noun)
a force that is a branch of the armed forces	the military forces of a nation

armed service (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