There are many thorns that can mortify us during the translation process, whatever the nature of the text we face, and translators should be aware of them. The first problem is related to reading and comprehension ability in the source language. Once the translator has coped with this obstacle, the most frequent translation difficulties are of a semantic and cultural nature (Tricás, 1995): "Linguistic untranslatability" (cognates, i.e. true and false friends, calque, and other forms of interference; institutional and standardized terms, neologisms, aphorisms, etc.), and "cultural untranslatability," (idioms, sayings, proverbs, jokes, puns, etc.). One should adopt a very cautious attitude toward these words or expressions so as to avoid interference and/or language misuse (Kussmaul, 1995).