acuity vs oxyopia

acuity and oxyopia both are nouns.

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

As nouns, oxyopia is a hyponym of acuity; that is, oxyopia is a word with a more specific, narrower meaning than acuity:

acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)
oxyopia: unusually acute vision

Other hyponyms of acuity include 20/20, twenty-twenty.

acuity (noun)	oxyopia (noun)
a quick and penetrating intelligence	unusually acute vision
sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)