shopping cart vs go-cart

shopping cart and go-cart both are nouns.

Word	Noun	Adjective	Verb	Adverb
shopping cart	Yes	No	No	No
go-cart	Yes	No	No	No

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

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

Other hypernyms of shopping cart include cart, handcart, pushcart.

shopping cart (noun)	go-cart (noun)
a handcart that holds groceries or other goods while shopping	a small vehicle with four wheels in which a baby or child is pushed around
	an enclosing framework on casters or wheels; helps babies learn to walk
	wheeled vehicle that can be pushed by a person; may have one or two or four wheels