What is the interaction between organisms or species in which both parties attempt to secure resources for themselves?

Flexi Says:
Competition is a relationship between living things that depend on the same resources. The resources may be food, water, or anything else they both need. Competition occurs whenever the two species try to get the same resources in the same place and at the same time. The two organisms are likely to come into conflict, and the organism better able to obtain that resource will "win" out over the other organism. What makes an organism better able to obtain a resource? They may be any of countless reasons, but each is considered an adaptation that makes an organism more fit to live in its environment.