volunteer vs military

volunteer and military both are nouns.

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

volunteer (noun)	military (noun)
a person who performs voluntary work	the military forces of a nation
(military) a person who freely enlists for service

volunteer (adjective)	military (adjective)
without payment	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