stroller vs baby buggy

stroller and baby buggy both are nouns.

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

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

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

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

stroller (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
someone who walks at a leisurely pace