war machine vs hostile

war machine and hostile both are nouns.

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

war machine (noun)	hostile (noun)
the military forces of a nation	troops belonging to the enemy's military forces

war machine (adjective)	hostile (adjective)
	characterized by enmity or ill will
	not belonging to your own country's forces or those of an ally
	unsolicited and resisted by the management of the target company (used of attempts to buy or take control of a business)
	very unfavorable to life or growth
	impossible to bring into friendly accord