leniency vs lenient

leniency is a noun but lenient is not a noun.

Word	Noun	Adjective	Verb	Adverb
leniency	Yes	No	No	No
lenient	No	Yes	No	No

leniency (noun)	lenient (noun)
lightening a penalty or excusing from a chore by judges or parents or teachers
mercifulness as a consequence of being lenient or tolerant
a disposition to yield to the wishes of someone

leniency (adjective)	lenient (adjective)
	characterized by tolerance and mercy
	tolerant or lenient
	not strict