While these two terms are often used interchangeably, and there are certain similarities in the tasks performed, there are also important distinctions. Translators typically convert written material from a source language to a target language, i.e. translate documents. Interpreters work with the spoken word, i.e. converting speech in a source language to a speech in a target language. A typical translator processes between 2000 and 3000 words per day. An interpreter, on the other hand, receives, processes, and conveys information at the rate of about 160 words per minute.