golf cart vs golfcart

golf cart and golfcart both are nouns.

Word	Noun	Adjective	Verb	Adverb
golf cart	Yes	No	No	No
golfcart	Yes	No	No	No

As nouns, golf cart and golfcart are synonyms defined as:

golf cart and golfcart: a small motor vehicle in which golfers can ride between shots

golf cart (noun)	golfcart (noun)
a small motor vehicle in which golfers can ride between shots	a small motor vehicle in which golfers can ride between shots