Answer:
Predator is an organism or group of organisms which kills and consumes other organisms in an ecosystem.Prey is an organism or group of organism which is killed by other organism in order to obtain them as food. Predation and prey interaction is necessary to make balance in surplus increase in population of prey.
An example including two different species might can compete over the same prey is a tiger and lion species competing for a same prey zebra. This shows a predator and prey relationship.