The document discusses oral communication and non-verbal communication. It defines oral communication as the interchange of verbal messages between people. It notes that oral communication is more informal than writing and includes meetings, phone calls, speeches, and reports. The document outlines characteristics of effective oral communication, such as being brief, precise, and avoiding vagueness. It also discusses listening skills, conversation control, body language, and the different types of non-verbal communication including personal, cultural, universal, and unrelated gestures and expressions.