The process of changing a message from one language to another, making appropriate grammatical and cultural adjustments to maintain message equivalence, in order to convey the message from one person to another through an intermediary, the interpreter.

the process of transferring one spoken language into another spoken language, either simultaneously or consecutively.

The conversion of the spoken word from one language to another.

The process of translating spoken language orally, as opposed to translating, which deals with written language.