smoke screen vs war machine

smoke screen and war machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
smoke screen	Yes	No	No	No
war machine	Yes	No	No	No

smoke screen (noun)	war machine (noun)
an action intended to conceal or confuse or obscure	the military forces of a nation
(military) screen consisting of a cloud of smoke that obscures movements