mover vs pusher

mover and pusher both are nouns.

Word	Noun	Adjective	Verb	Adverb
mover	Yes	No	No	No
pusher	Yes	No	No	No

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

mover (noun)	pusher (noun)
a company that moves the possessions of a family or business from one site to another	a small vehicle with four wheels in which a baby or child is pushed around
someone who moves	a sandal attached to the foot by a thong over the toes
(parliamentary procedure) someone who makes a formal motion	someone who pushes
workman employed by a moving company	an unlicensed dealer in illegal drugs
	one who intrudes or pushes himself forward