sharpness vs acuity

sharpness and acuity both are nouns.

Word	Noun	Adjective	Verb	Adverb
sharpness	Yes	No	No	No
acuity	Yes	No	No	No

As nouns, sharpness and acuity are synonyms defined as:

Other synonyms of sharpness include acuteness, keenness.

sharpness (noun)	acuity (noun)
harshness of manner	a quick and penetrating intelligence
thinness of edge or fineness of point	sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)
a strong odor or taste property
the quality of being sharp and clear
the attribute of urgency in tone of voice
the quality of being keenly and painfully felt
a quick and penetrating intelligence