Translation: Translators write
OSCA 411532 – Translators transfer a source text from one language into another, usually within an extended time frame to allow for corrections and modifications, without the presence of the participants requiring the transfer.
Interpreting: Interpreters speak or sign
OSCA 411531 – Interpreters transfer a spoken or signed language into another spoken or signed language, usually within a limited time frame, in the physical, visual or aural presence of the participants requiring the transfer.