battle vs war machine

battle and war machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
battle	Yes	No	Yes	No
war machine	Yes	No	No	No

battle (noun)	war machine (noun)
a hostile meeting of opposing military forces in the course of a war	the military forces of a nation
an energetic attempt to achieve something
an open clash between two opposing groups (or individuals)

battle (verb)	war machine (verb)
battle or contend against in or as if in a battle