I believe that even when we speak the same language – and this is our mother tongue – misunderstandings can still arise, simply because not everyone attaches the same meaning to the same word. When different languages are spoken and these have to be translated back and forth into one’s own language, the confusion naturally becomes even greater. So it would indeed be good if everyone bore this in mind. Even if the language is correct, it is wise to bear in mind that there are many differences in terms of interpretation and emotional connotations, and that this, in turn, can lead to many misunderstandings.
You’ve actually put quite well into words what’s happening. This poll actually came about after a discussion arose following something that was allegedly said. Nowhere in the comment could I find a single wrong word. The person who was angry and made accusations refused to point out that bit of text. A pity, but so be it.

As for languages: I believe that most languages do have a considerable number of words with multiple meanings.