This document provides an overview of phonetics and phonology, the two linguistic disciplines concerned with speech sounds. Phonetics describes the physical properties of sounds, including their articulation, acoustics, and perception. Phonology examines the functional role of sounds in a language's system. The text outlines the basic units of phonetics, phones, and describes how sounds are classified into consonants and vowels based on their manner and place of articulation. It provides examples of the different consonant types found in English, such as plosives, fricatives, nasals, and affricates.