The situation where a phonetic difference is capable of signalling a difference in word meaning in a particular language. For instance, vowel nasalization in French can change the identity of a word, as can be seen in the pair of words (a minimal pair) mot [mo] 'word' and mon [mõ] 'my'. This pair of words shows that there is a contrast between oral [o] and nasal [õ] in French (in other words, /o/ and /õ/ are different phonemes in French). English also has oral and nasalized vowels phonetically, but these vowels never contrast (in other words, they are allophones of the same phoneme).