general staff vs military

general staff and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
general staff	Yes	No	No	No
military	Yes	Yes	No	No

general staff (noun)	military (noun)
military officers assigned to assist a senior officer in planning military policy	the military forces of a nation

general staff (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