cart vs shopping cart

cart and shopping cart both are nouns.

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

As nouns, shopping cart is a hyponym of cart; that is, shopping 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
shopping cart: a handcart that holds groceries or other goods while shopping

cart (noun)	shopping cart (noun)
a heavy open wagon usually having two wheels and drawn by an animal	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

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