workforce vs men

workforce and men both are nouns.

Word	Noun	Adjective	Verb	Adverb
workforce	Yes	No	No	No
men	Yes	No	No	No

As nouns, workforce and men are synonyms defined as:

Other synonyms of workforce include hands, manpower, work force.

workforce (noun)	men (noun)
the force of workers available	the force of workers available