jumper cable vs jumper

jumper cable and jumper both are nouns.

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

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

Other hypernyms of jumper cable include conducting wire, wire.

jumper 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