There are four main types of communication: verbal communication which includes speech, written communication which involves written words, nonverbal communication which conveys messages without words through gestures and expressions, and visual communication which relies on visual aids like images, symbols, and design to get a message across. Each type of communication serves a different purpose and is used in various contexts depending on whether an individual, small group, or large audience needs to receive the information. Effective communication requires understanding and using different types of communication appropriately based on the situation.