penance vs remission

penance and remission both are nouns.

Word	Noun	Adjective	Verb	Adverb
penance	Yes	No	No	No
remission	Yes	No	No	No

penance (noun)	remission (noun)
voluntary self-punishment in order to atone for some wrongdoing	the act of absolving or remitting; formal redemption as pronounced by a priest in the sacrament of penance
a Catholic sacrament; repentance and confession and atonement and absolution	(law) the act of remitting (especially the referral of a law case to another court)
remorse for your past conduct	an abatement in intensity or degree (as in the manifestations of a disease)
	a payment of money sent to a person in another place