hopper vs jumper

hopper and jumper both are nouns.

Word	Noun	Adjective	Verb	Adverb
hopper	Yes	No	No	No
jumper	Yes	No	No	No

As nouns, jumper is a hypernym of hopper; that is, jumper is a word with a broader meaning than hopper:

hopper (noun)	jumper (noun)
(baseball) a hit that travels along the ground	(basketball) a player releases the basketball at the high point of a jump
terrestrial plant-eating insect with hind legs adapted for leaping	a sleeveless dress resembling an apron; worn over other clothing
funnel-shaped receptacle; contents pass by gravity into a receptacle below	a loose jacket or blouse worn by workmen
a machine used for picking hops	a small connector used to make temporary electrical connections
someone who hops	a coverall worn by children
	a crocheted or knitted garment covering the upper part of the body
	an athlete who competes at jumping
	a person who jumps