Shakespeare’s false friends
False friends (‘faux amis’) are words in one language which look the same as words in another. We therefore think that their meanings are the same and get a shock when we find they are not. Generations of French students have believed that demander means ‘demand’ (whereas it means ‘ask’) or librairie means ‘library’ (instead of ‘bookshop’). It is a sign of a mature understanding of a language when you can cope with the false friends, which can be some of its most frequently used words.