The document discusses verbal and non-verbal communication. Verbal communication involves speaking, writing, listening and reading using words. Effective verbal communication considers the objective, uses simple language, is brief and precise, and assumes nothing. Merits include being personal and allowing feedback, while demerits are it can be forgotten and has no legal record. Barriers include status differences and selective listening. Non-verbal communication conveys unwritten messages through body language, gestures, eye contact and more. It is an important part of communication and can provide additional meaning beyond words.