smoke screen vs hiding

smoke screen and hiding both are nouns.

Word	Noun	Adjective	Verb	Adverb
smoke screen	Yes	No	No	No
hiding	Yes	No	No	No

As nouns, hiding is a hypernym of smoke screen; that is, hiding is a word with a broader meaning than smoke screen:

Other hypernyms of smoke screen include concealing, concealment.

smoke screen (noun)	hiding (noun)
an action intended to conceal or confuse or obscure	the activity of keeping something secret
(military) screen consisting of a cloud of smoke that obscures movements	the state of being hidden