examples of pins
Their shapes are specific to each variety of the game.
fivepin 
Lightweight pin that is about 12 in high and has a rubber band around it; this five-pin game is very popular in Canada.
Canadian duckpin 
Similar to American duckpin, it has a rubber band around it to make it heavier; this 10-pin game is very widespread in Canada.
candlepin 
Cylindrical pin that is about 16 in high; this game with 10 pins is played in some provinces of Canada and states of the United States.
American duckpin 
One of 10 pins that is lightweight and 9.4 in high; the game is played almost exclusively in the United States.
tenpin 
Pin that weighs 3.5 to 3.7 lb and measures 15 in high; this is the most widespread type of bowling in the world.