All translation is necessarily interpretation.
Translation is never just a matter of exchanging a word in one language for its equivalent in another language. While living in Switzerland, I once made a phone call in response to an advertisement for an apartment. Oh, I though to myself, the lady must be exercising on some kind of apparatus. I therefore asked that she be called to the phone, whereupon the person on the other end of the line burst forth in gales of laughter. When translating, then, it is necessary to be as faithful to the source text as is humanly possible.