combined operation vs military

combined operation and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
combined operation	Yes	No	No	No
military	Yes	Yes	No	No

combined operation (noun)	military (noun)
a military operation carried out cooperatively by two or more allied nations or a military operation carried out by coordination of sea, land, and air forces	the military forces of a nation

combined operation (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