military vs army tank

military and army tank both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
army tank	Yes	No	No	No

military (noun)	army tank (noun)
the military forces of a nation	an enclosed armored military vehicle; has a cannon and moves on caterpillar treads

military (adjective)	army tank (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