hands vs work force

hands and work force both are nouns.

Word	Noun	Adjective	Verb	Adverb
hands	Yes	No	No	No
work force	Yes	No	No	No

As nouns, hands and work force are synonyms defined as:

Other synonyms of hands include manpower, men, workforce.

hands (noun)	work force (noun)
(with `in') guardianship over; in divorce cases it is the right to house and care for and discipline a child	the force of workers available
the force of workers available