war machine vs umbrella

war machine and umbrella both are nouns.

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

war machine (noun)	umbrella (noun)
the military forces of a nation	a formation of military planes maintained over ground operations or targets
	having the function of uniting a group of similar things
	a lightweight handheld collapsible canopy

war machine (adjective)	umbrella (adjective)
	covering or applying simultaneously to a number of similar items or elements or groups