confession vs confess

confession is a noun but confess is not a noun.

Word	Noun	Adjective	Verb	Adverb
confession	Yes	No	No	No
confess	No	No	Yes	No

confession (noun)	confess (noun)
(Roman Catholic Church) the act of a penitent disclosing his sinfulness before a priest in the sacrament of penance in the hope of absolution
an admission of misdeeds or faults
a written document acknowledging an offense and signed by the guilty party
a public declaration of your faith
the document that spells out the belief system of a given church (especially the Reformation churches of the 16th century)

confession (verb)	confess (verb)
	confess to a punishable or reprehensible deed, usually under pressure
	admit (to a wrongdoing)
	confess to God in the presence of a priest, as in the Catholic faith