Vowel
The letter W can sometimes be the second part of a vowel sound as in words like such as cow, bow, or how. In these words the vowel has the sound of /aʊ/. The letter W can be used as a consonant sound at the beginning of in the words when, where, wet. In some languages, like Welsh, the letter W represents the vowel sound /ʊ/, like cwm (a kind of valley).