sufficiency vs enough

sufficiency and enough both are nouns.

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

As nouns, sufficiency and enough are synonyms defined as:

sufficiency and enough: an adequate quantity; a quantity that is large enough to achieve a purpose

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

sufficiency (adjective)	enough (adjective)
	sufficient for the purpose

sufficiency (adverb)	enough (adverb)
	as much as necessary