The document discusses different manners of articulation for English consonants. It describes stops as sounds involving complete closure of the oral cavity, while continuants allow continuous air flow. Continuants include fricatives and approximants. Sounds are also classified as sonorants, which involve continuous airflow, versus obstruents, which cause airflow obstruction and turbulence. The document outlines a system for distinguishing consonants based on whether they are continuants or stops, and whether they are sonorants or obstruents.