1) Phonology is the study of speech sounds and how they are organized in languages. It examines units of sound like phonemes, morphemes, and their patterns.
2) Speech sounds can be classified as either consonants or vowels. Consonants involve restricting air flow while vowels allow free flow of air to create different sounds.
3) The relationship between phonemic representations of words and their phonetic pronunciations is governed by rules of phonology. These rules include assimilation, dissimilation, and epenthesis.