acuteness vs acute

acuteness and acute both are nouns.

Word	Noun	Adjective	Verb	Adverb
acuteness	Yes	No	No	No
acute	Yes	Yes	No	No

acuteness (noun)	acute (noun)
the quality of having a sharp edge or point	a mark placed above a vowel to indicate pronunciation
a quick and penetrating intelligence
a sensitivity that is keen and highly developed

acuteness (adjective)	acute (adjective)
	having or experiencing a rapid onset and short but severe course
	of an angle; less than 90 degrees
	of critical importance and consequence
	having or demonstrating ability to recognize or draw fine distinctions
	ending in a sharp point
	extremely sharp or severe