sniper rifle vs military machine

sniper rifle and military machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
sniper rifle	Yes	No	No	No
military machine	Yes	No	No	No

sniper rifle (noun)	military machine (noun)
an extremely powerful rifle developed for the military; capable of destroying light armored vehicles and aircraft more than a mile away	the military forces of a nation