military vs olive drab

military and olive drab both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
olive drab	Yes	No	No	No

military (noun)	olive drab (noun)
the military forces of a nation	a cloth of an olive-brown color used for military uniforms
	military uniform of the United States Army; made from cloth of a dull olive color
	a dull greyish to yellowish or light olive brown

military (adjective)	olive drab (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