serving cart vs pushcart

serving cart and pushcart both are nouns.

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

As nouns, pushcart is a hypernym of serving cart; that is, pushcart is a word with a broader meaning than serving cart:

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

Other hypernyms of serving cart include cart, go-cart, handcart.

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