Better and Keen-edged

Better adjective - (comparative of `good') superior to another (of the same class or set or kind) in excellence or quality or desirability or suitability; more highly skilled than another.

Keen-edged and better are semantically related. In some cases you can use "Keen-edged" instead an adjective "Better".

Better and keen-edged are semantically related. Sometimes you can use "Better" instead an adjective phrase "Keen-edged".