kick back vs rebound

kick back is not a noun while rebound is a noun.

Word	Noun	Adjective	Verb	Adverb
kick back	No	No	Yes	No
rebound	Yes	No	Yes	No

As verbs, rebound is a hypernym of kick back; that is, rebound is a word with a broader meaning than kick back:

Other hypernyms of kick back include bounce, bound, recoil, resile, reverberate, ricochet, spring, take a hop.

kick back (noun)	rebound (noun)
	the act of securing possession of the rebounding basketball after a missed shot
	a reaction to a crisis or setback or frustration
	a movement back from an impact

kick back (verb)	rebound (verb)
spring back, as from a forceful thrust	return to a former condition
pay a kickback; make an illegal payment	spring back; spring away from an impact