astuteness vs perspicaciousness

astuteness and perspicaciousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
astuteness	Yes	No	No	No
perspicaciousness	Yes	No	No	No

As nouns, astuteness and perspicaciousness are synonyms defined as:

astuteness and perspicaciousness: intelligence manifested by being astute (as in business dealings)

Other synonyms of astuteness include perspicacity, shrewdness.

astuteness (noun)	perspicaciousness (noun)
intelligence manifested by being astute (as in business dealings)	intelligence manifested by being astute (as in business dealings)
the intellectual ability to penetrate deeply into ideas