Biological interaction is the term used to describe the relationships that occur between different living organisms, or between living organisms and their environment. It covers a wide range of topics in fields such as ecology, genetics, and physiology. There are several synonyms for the term biological interaction, including symbiosis, mutualism, commensalism, predator-prey relationships, and competition. Symbiosis describes a relationship where two organisms live in close proximity and benefit from each other, while commensalism describes a relationship where one organism benefits while the other is unaffected. Predator-prey relationships refer to the chasing or hunting of one organism by another, while competition describes instances where organisms are vying for the same resources. Understanding biological interactions is crucial in understanding how ecosystems function and how different species coexist.