Commensals are organisms that live in close association with each other, in which one organism benefits, and the other is neither harmed nor benefited. This type of interaction is also known as commensalism. There are several synonyms for the word commensals, such as symbionts, associates, roommates, tenants, and companions. These terms all refer to organisms that live near or with each other and have a similar type of relationship. Symbionts refers to any organisms that live together in a symbiotic relationship. Associates, on the other hand, generally refers to two or more individuals who work together in a business or other enterprise. Meanwhile, roommates, tenants, and companions are typically used to describe human or animal relationships in cohabitation scenarios.