disfavour vs rejection

disfavour and rejection both are nouns.

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

As nouns, rejection is a hypernym of disfavour; that is, rejection is a word with a broader meaning than disfavour:

disfavour (noun)	rejection (noun)
an inclination to withhold approval from some person or group	the act of rejecting something
the state of being out of favor	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

disfavour (verb)	rejection (verb)
put at a disadvantage; hinder, harm