This document discusses the sounds of language. It contains exercises that group words according to their pronunciation of certain vowels and consonants. The first exercise lists words and their varying pronunciations of vowels like "a", "e", "i". The second exercise provides lists of words grouped by similar consonant pronunciations, such as words containing the "f" or "k" sound. The document also defines various consonants using words as examples, such as describing the "fan" sound as a "voiceless labiodental fricative".