adequacy vs satisfactoriness

adequacy and satisfactoriness both are nouns.

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

As nouns, satisfactoriness is a hypernym of adequacy; that is, satisfactoriness is a word with a broader meaning than adequacy:

adequacy: the quality of being able to meet a need satisfactorily:
satisfactoriness: the quality of giving satisfaction sufficient to meet a demand or requirement

adequacy (noun)	satisfactoriness (noun)
the quality of being able to meet a need satisfactorily:	the quality of giving satisfaction sufficient to meet a demand or requirement
the quality of being sufficient for the end in view