This document discusses syllables and syllable stress in words. It defines a syllable as the sound of a vowel created when pronouncing letters like A, E, I, O, U. The number of syllables in a word is equal to the number of vowel sounds. Words can be mono-syllabic, having one syllable, or poly-syllabic, having multiple syllables. All multi-syllable words have one syllable that is stressed, making it longer, higher in pitch, and louder. The rules for determining stressed syllables in words of different types are explained. Examples are provided to demonstrate applying word stress correctly.