Synonyms:
acuteness, acuity, sharpness, keenness
Meaning: a quick and penetrating intelligence; "he argued with great acuteness"; "I admired the keenness of his mind"
Synonyms:
acuity, visual_acuity, sharp-sightedness
Meaning: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)