This document provides an overview of phonology, including the phoneme, vowel articulations, and descriptions of several English vowel phonemes. It examines the smallest units of sound (/b/, /u/, /m/) and categorizes vowels based on tongue position (high front tense /iy/, high back lax /ʊ/, etc.). Charts illustrate vowel articulation in the mouth and examples are given of each phoneme's phonetic features and positioning in words.