Contending with another in a contest, race or game or in any real life situation.
Competition in the natural or social order is the more or less active demand by two or more entities (individuals, groups, or organizations) at the same time for some environmental resource in excess of the available supply. Typically this process may result in the ultimate elimination of the less effective organism or entity from the particular setting in which the process is taking place.
Competing provides an on-the-spot means of establishing right, which circumvents haggling, violence and arguing. It demonstrates rather than attributes, ability.
Competing divides any situation into winning and losing factions, and is thus useless in any situation that requires social unification, equity or subtlety.