bounce vs jounce

bounce and jounce both are nouns.

Word	Noun	Adjective	Verb	Adverb
bounce	Yes	No	Yes	No
jounce	Yes	No	Yes	No

As verbs, bounce and jounce are synonyms defined as:

bounce (noun)	jounce (noun)
a light, self-propelled movement upwards or forwards	a sudden jarring impact
the quality of a substance that is able to rebound
rebounding from an impact (or series of impacts)

bounce (verb)	jounce (verb)
eject from the premises	move up and down repeatedly
hit something so that it bounces
spring back; spring away from an impact
leap suddenly
move up and down repeatedly
come back after being refused
refuse to accept and send back