cart vs serving cart

cart and serving cart both are nouns.

Word	Noun	Adjective	Verb	Adverb
cart	Yes	No	Yes	No
serving cart	Yes	No	No	No

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

cart: wheeled vehicle that can be pushed by a person; may have one or two or four wheels
serving cart: a handcart for serving food

cart (noun)	serving cart (noun)
a heavy open wagon usually having two wheels and drawn by an animal	a handcart for serving food
wheeled vehicle that can be pushed by a person; may have one or two or four wheels

cart (verb)	serving cart (verb)
draw slowly or heavily
transport something in a cart