Communication: Definitions, Functions, Importance, Principles, Process, Types, and Elements. Communication is defined as the process of passing information and understanding from one person to another. Learn what communication is and how it works in everyday life. Explore the different types of communication, the process of communication, and the importance of communication in various settings. The word “communication” comes from the Latin “communis,” meaning “to share,” and includes verbal, non-verbal and electronic means of human interaction. Scholars who study communication analyze the development of communication skills in humans and theorize about how communication can be made more effective. [ad2] The meaning of COMMUNICATION is the act or process of using words, sounds, signs, or behavior to express or exchange information or to express thoughts, feelings, etc., to another person.