Symbiosis is a close relationship between two different kinds of organisms, or living things. There are three basic types of symbiotic relationships: mutualism, commensalism, and parasitism. Close living arrangements between two different species is called symbiosis.
In law, a joinder is the joining of two or more legal issues together. Procedurally, a joinder allows multiple issues to be heard in one hearing or trial and is done when the issues or parties involved overlap sufficiently to make the process more efficient or more fair. It helps courts avoid hearing the same facts multiple times or seeing the same parties return to court separately for each of their legal disputes.
As can easily be inferred from the above definitions, a party is generally not required to join in one suit several distinct causes of action. The joinder of separate causes of action, where allowable, is permissive and not mandatory in the absence of a contrary statutory provision, even though the causes of action arose from the same factual setting and might under applicable joinder rules be joined.