working man vs mover

working man and mover both are nouns.

Word	Noun	Adjective	Verb	Adverb
working man	Yes	No	No	No
mover	Yes	No	No	No

As nouns, mover is a hyponym of working man; that is, mover is a word with a more specific, narrower meaning than working man:

working man (noun)	mover (noun)
an employee who performs manual or industrial labor	a company that moves the possessions of a family or business from one site to another
	someone who moves
	(parliamentary procedure) someone who makes a formal motion
	workman employed by a moving company