rejection vs reject

rejection and reject both are nouns.

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

rejection (noun)	reject (noun)
the act of rejecting something	the person or thing that is rejected or set aside as inferior in quality
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)	reject (verb)
	not accept something given or offered
	dismiss from consideration or a contest
	deem wrong or inappropriate
	reject with contempt
	not accept as true
	refuse entrance or membership
	resist immunologically the introduction of some foreign tissue or organ