Eating away and Sharpen up

Eating away noun - Geology) the mechanical process of wearing or grinding something down (as by particles washing over it.

Sharpen up and eating away are semantically related. In some cases you can use "Sharpen up" instead a verb phrase "Eating away".

Eating away and sharpen up are semantically related. Sometimes you can replace phrase "Eating away" with "Sharpen up", this terms are similar.