arrow
Projectile fired by a bow or a crossbow; it consists of a shaft, a point and a heel with a notch and fletching.
fletching 
Feather or synthetic material attached to the base of the arrow to stabilize it during flight.
point 
Pointed metal end of the arrow; depending on the power of the bow used, points of different weights are used.
nock 
Slot into which the bowstring fits to keep the arrow in place while shooting it.
shaft 
Long rod that makes up the body of the arrow; it is made of carbon fiber or an alloy of aluminum and carbon.