acute vs acuate

acute is a noun but acuate is not a noun.

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

As adjectives, acute and acuate are synonyms defined as:

Other synonyms of acute include needlelike, sharp.

acute (noun)	acuate (noun)
a mark placed above a vowel to indicate pronunciation

acute (adjective)	acuate (adjective)
having or experiencing a rapid onset and short but severe course	ending in a sharp point
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