Better and Knifelike

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.

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

Knifelike adjective - Cutting or able to cut as if with a knife.

Better and knifelike are semantically related. Sometimes you can use "Better" instead an adjective "Knifelike".