combat ship vs military

combat ship and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
combat ship	Yes	No	No	No
military	Yes	Yes	No	No

combat ship (noun)	military (noun)
a government ship that is available for waging war	the military forces of a nation

combat ship (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