adequacy vs equal

adequacy and equal both are nouns.

Word	Noun	Adjective	Verb	Adverb
adequacy	Yes	No	No	No
equal	Yes	Yes	Yes	No

adequacy (noun)	equal (noun)
the quality of being able to meet a need satisfactorily:	a person who is of equal standing with another in a group
the quality of being sufficient for the end in view

adequacy (adjective)	equal (adjective)
	having the same quantity, value, or measure as another
	having the requisite qualities or resources to meet a task

adequacy (verb)	equal (verb)
	make equal, uniform, corresponding, or matching
	be identical or equivalent to
	be equal to in quality or ability