smoke screen vs military machine

smoke screen and military machine both are nouns.

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

smoke screen (noun)	military 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