booster cable vs jumper

booster cable and jumper both are nouns.

Word	Noun	Adjective	Verb	Adverb
booster cable	Yes	No	No	No
jumper	Yes	No	No	No

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

Other hypernyms of booster cable include conducting wire, wire.

booster cable (noun)	jumper (noun)
a jumper that consists of a short piece of wire	(basketball) a player releases the basketball at the high point of a jump
	a sleeveless dress resembling an apron; worn over other clothing
	a loose jacket or blouse worn by workmen
	a small connector used to make temporary electrical connections
	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