Communication is the process of passing information from one person to another through verbal or nonverbal means to affect change. The communication process involves interrelated elements like the sender, message, medium, receiver, and feedback working together. It follows steps where the sender encodes an idea into a message, sends it through a channel, the receiver decodes the message and provides feedback. For communication to be effective, the sender and receiver must have clear goals and their feedback must be in line with the original sender's intent.