Interference competition is a concept in ecology that describes the competition between individuals of different species for access to resources. Synonyms for interference competition include competitive exclusion, agonistic interaction, aggressive interaction, and direct competition. Competitive exclusion refers to the elimination or displacement of a species from a particular habitat due to intense competition with another species. Agonistic interaction describes the behavior of organisms that engage in physical or chemical interactions to establish dominance over resources. Aggressive interaction refers to competitive behavior that involves physical aggression, such as fighting or territorial marking. Direct competition is the competition between organisms that occurs when resources are limited, and multiple individuals must compete to survive. Overall, these synonyms highlight the importance of competition in shaping ecological communities.