pushchair vs pusher

pushchair and pusher both are nouns.

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

As nouns, pushchair and pusher are synonyms defined as:

pushchair and pusher: a small vehicle with four wheels in which a baby or child is pushed around

Other synonyms of pushchair include baby buggy, baby carriage, carriage, go-cart, perambulator, pram, stroller.

pushchair (noun)	pusher (noun)
a small vehicle with four wheels in which a baby or child is pushed around	a small vehicle with four wheels in which a baby or child is pushed around
	a sandal attached to the foot by a thong over the toes
	someone who pushes
	an unlicensed dealer in illegal drugs
	one who intrudes or pushes himself forward