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.
Like many other common law terms, the term originated in England in the Middle Ages, and the call to the bar refers to the summons issued to one found fit to speak at the 'bar' of the royal courts. In time, the English judges allowed only legally qualified men to address them on the law, and later delegated the qualification and admission of barristers to the four Inns of Court.