The sharp incisors at the front of the mouth are made for cutting food. They have sharp biting edge

Molars and premolars are at the back of the mouth they crush and grind the food. Herbivores need large surfaced molars for crushing and grinding vegetation. Elephants particularly have large molars, which grind their food. By the end of an elephant's life it can wear down it's teeth quite a lot

The Pointed canines are at the sides of the mouth and are designed to tear food. The canines are very prominent in animals such as the dog, which explains the name "canine".