predator-prey relationship
This interaction is called predation.
food chain
An organism that eats another organism is called a consumer.
Commensalism
An organism that kills and eats all or part of another organism is called a carnivore.
cannibalism
A word meaning interaction in which one organism kills and eats another is carnivore. Carnivorous is a classification of animal often used to describe mammals that eat meat.
An organism that eats another organism is called a consumer.
Any organism that eats another organism is called a consumer.
Such interaction is known as predator-prey relationship for example relation of a Gazelle and a Lion.
eating
If the organism is eating another its a carnivore.