How are false friends created? The main way is that one language borrows from another or two related languages take a word from the same source. In time, the meaning in one of the languages may morph into something different or one meaning gets dropped.
For example, English took the word, friend, from the German word, freund, while the Scandinavians changed it to frände in Sweden and frændein Danish. The original word meant ‘someone one cares for,’ so it could refer to a friend or a relative. The word, in Danish and Swedish, however, means relative,losing the friend meaning while in English we have lost the relative meaning.