hand truck vs handcart

hand truck and handcart both are nouns.

Word	Noun	Adjective	Verb	Adverb
hand truck	Yes	No	No	No
handcart	Yes	No	No	No

As nouns, handcart is a hypernym of hand truck; that is, handcart is a word with a broader meaning than hand truck:

hand truck: a handcart that has a frame with two low wheels and a ledge at the bottom and handles at the top; used to move crates or other heavy objects
handcart: wheeled vehicle that can be pushed by a person; may have one or two or four wheels

Other hypernyms of hand truck include cart, go-cart, pushcart.

hand truck (noun)	handcart (noun)
a handcart that has a frame with two low wheels and a ledge at the bottom and handles at the top; used to move crates or other heavy objects	wheeled vehicle that can be pushed by a person; may have one or two or four wheels