suffice vs sufficiency

suffice is not a noun while sufficiency is a noun.

Word	Noun	Adjective	Verb	Adverb
suffice	No	No	Yes	No
sufficiency	Yes	No	No	No

suffice (noun)	sufficiency (noun)
	the quality of being sufficient for the end in view
	an adequate quantity; a quantity that is large enough to achieve a purpose
	sufficient resources to provide comfort and meet obligations

suffice (verb)	sufficiency (verb)
be sufficient; be adequate, either in quality or quantity