armed forces vs smoke screen

armed forces and smoke screen both are nouns.

Word	Noun	Adjective	Verb	Adverb
armed forces	Yes	No	No	No
smoke screen	Yes	No	No	No

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