connexion vs jumper

connexion and jumper both are nouns.

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

As nouns, jumper is a hyponym of connexion; that is, jumper is a word with a more specific, narrower meaning than connexion:

connexion (noun)	jumper (noun)
the act of bringing two things into contact (especially for communication)	(basketball) a player releases the basketball at the high point of a jump
shifting from one form of transportation to another	a sleeveless dress resembling an apron; worn over other clothing
an instrumentality that connects	a loose jacket or blouse worn by workmen
the process of bringing ideas or events together in memory or imagination	a small connector used to make temporary electrical connections
a relation between things or events (as in the case of one causing the other or sharing features with it)	a coverall worn by children
a connecting shape	a crocheted or knitted garment covering the upper part of the body
	an athlete who competes at jumping
	a person who jumps