This document discusses oral communication and provides information on key aspects related to effective oral communication. It defines oral communication as communication through speaking and includes conversations, speeches and presentations. It outlines several characteristics of effective oral communication including being well-planned, concise, using an attractive presentation style, considering the audience, being realistic and free from errors. The document also discusses advantages like high understanding and flexibility as well as disadvantages such as potential for misunderstandings. Finally, it covers topics like breathing techniques, intonation and diction that are important for oral communication.