Knife
Part of speech: noun
Definition: A utensil or a tool designed for cutting, consisting of a flat piece of hard material, usually steel or other metal (the blade), usually sharpened on one edge, attached to a handle. The blade may be pointed for piercing. A weapon designed with the aforementioned specifications intended for slashing and/or stabbing and too short to be called a sword. A dagger. Any blade-like part in a tool or a machine designed for cutting, such as the knives for a chipper.
Part of speech: verb
Definition: To cut with a knife. To use a knife to injure or kill by stabbing, slashing, or otherwise using the sharp edge of the knife as a weapon. To cut through as if with a knife. To betray, especially in the context of a political slate. To positively ignore, especially in order to denigrate. cf cut
Example sentence: Only the knife knows what goes on in the heart of a pumpkin.
Stab
Part of speech: noun
Definition: An act of stabbing or thrusting with an object.A wound made by stabbing.Pain inflicted on a person's feelings.An attempt.Criticism.
Part of speech: verb
Definition: To pierce or to wound with a pointed tool or weapon, especially a knife or dagger.To aim a blow with a weapon or a finger (at someone or something).To aim a blow with a weapon or a finger.To cause a sharp, painful sensation.