The term "bowling" usually refers to a sport with how many pins?

Bowling is a target sport and recreational activity in which a player rolls or throws a bowling ball toward pins (in pin bowling) or another target (in target bowling). In the U.S. and Canada, the term bowling usually refers to ten-pin bowling; in the U.K. and Commonwealth Countries, however, the term bowling could also refer to lawn bowls.

In pin bowling, the goal is to knock over pins at the end of a lane, with either two or three balls per frame allowed to knock down all pins. A strike is achieved when all the pins are knocked down on the first roll, and a spare is achieved if all the pins are knocked over on a second roll.

Lanes have wood or synthetic surfaces onto which protective lubricating oil is applied in different specified oil patterns that vary ball path characteristics. Common types of pin bowling include ten-pin, candlepin, duckpin, nine-pin, and five-pin bowling.