rejection vs repulse

rejection and repulse both are nouns.

Word	Noun	Adjective	Verb	Adverb
rejection	Yes	No	No	No
repulse	Yes	No	Yes	No

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

Other hyponyms of rejection include renunciation, repudiation, rebuff, snub, short shrift, summary treatment.

rejection (noun)	repulse (noun)
the act of rejecting something	an instance of driving away or warding off
the speech act of rejecting
(medicine) an immunological response that refuses to accept substances or organisms that are recognized as foreign
the state of being rejected

rejection (verb)	repulse (verb)
	force or drive back
	cause to move back by force or influence
	be repellent to; cause aversion in