Acuity and Depth

Acuity noun - The state or quality of being able to sense slight impressions or differences.

Depth and acuity are semantically related In some cases you can use "Depth" instead a noun "Acuity".

Depth noun - The quality of being great in extent (as of insight).

Acuity and depth are semantically related in insight topic. Sometimes you can use "Acuity" instead a noun "Depth", if it concerns topics such as profoundness.