shopping cart vs pushcart

shopping cart and pushcart both are nouns.

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

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

shopping cart: a handcart that holds groceries or other goods while shopping
pushcart: wheeled vehicle that can be pushed by a person; may have one or two or four wheels

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

shopping cart (noun)	pushcart (noun)
a handcart that holds groceries or other goods while shopping	wheeled vehicle that can be pushed by a person; may have one or two or four wheels