military vs amphibious operation

military and amphibious operation both are nouns.

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

military (noun)	amphibious operation (noun)
the military forces of a nation	a military operation by both land and sea forces

military (adjective)	amphibious operation (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