Translation of Konservendose

In England, a man would still open a door to a woman, but in other countries this habbit is less common. In a way, habits that existed hundred years ago slowly loose their meaning and importance.
On Friday, I can send it from the US. But I would send it from here with EMS or even better with UPS, including delivery confirmation and tracking. From the US there will be no return address or tracking.
About multiple translations: We want students to memorize 'idioma' and 'lengua' as they are both very common. The best we could do is to place them in 2 different lessons, so that users learn them both.