sniper rifle vs war machine

sniper rifle and war machine both are nouns.

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

sniper rifle (noun)	war 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