pushchair vs baby buggy

pushchair and baby buggy both are nouns.

Word	Noun	Adjective	Verb	Adverb
pushchair	Yes	No	No	No
baby buggy	Yes	No	No	No

As nouns, pushchair and baby buggy are synonyms defined as:

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

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

pushchair (noun)	baby buggy (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