what is the difference between a pen knife and a pocket knife
Penknife Today the word penknife is the common British English term for both a pocketknife, which can have single or multiple blades, and for multi-tools, with additional tools incorporated into the design.[2]
Grip (tennis) In tennis, a grip is a way of holding the racquet in order to hit shots during a match. The three most commonly used conventional grips are: the Continental (or "Chopper"), the Eastern and the Western. Most players change grips during a match depending on what shot they are hitting.