acuity vs sharp-sightedness

acuity and sharp-sightedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
acuity	Yes	No	No	No
sharp-sightedness	Yes	No	No	No

As nouns, acuity and sharp-sightedness are synonyms defined as:

acuity and sharp-sightedness: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)

Other synonyms of acuity include visual acuity.

acuity (noun)	sharp-sightedness (noun)
a quick and penetrating intelligence	lively attentiveness
sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)	sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)