garden cart vs pushcart

garden cart and pushcart both are nouns.

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

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

garden cart: a cart for carrying small loads; has handles and one or more wheels
pushcart: wheeled vehicle that can be pushed by a person; may have one or two or four wheels

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

garden cart (noun)	pushcart (noun)
a cart for carrying small loads; has handles and one or more wheels	wheeled vehicle that can be pushed by a person; may have one or two or four wheels