full complement vs work force

full complement and work force both are nouns.

Word	Noun	Adjective	Verb	Adverb
full complement	Yes	No	No	No
work force	Yes	No	No	No

As nouns, work force is a hypernym of full complement; that is, work force is a word with a broader meaning than full complement:

Other hypernyms of full complement include hands, manpower, men, workforce.

full complement (noun)	work force (noun)
number needed to make up a whole force	the force of workers available