| Term | Definition |
| Channel | Medium through which a message passes from sender to receiver. |
| Communication | The process of creating meaning through symbolic interaction |
| communication competence | Ability to maintain a relationship on terms acceptable to all parties. |
| Coordination | Interaction in which participants interact smoothly, with a high degree of satisfaction but without necessarily understanding one another well. |
| Decoding | The process in which a receiver attaches meaning to a message |
| Dyad | A two-person unit. |
| dyadic communication | Two-person communication |
| encoding | The process of putting thoughts into symbols, most commonly words |
| environment | Both the physical setting in which communication occurs and the personal perspectives of the parties involved. |
| Feedback | The discernible response of a receiver to a sender's message. |
| interpersonal communication | Behavior that treats others as objects rather than as individuals |
| intrapersonal communication | Communication that occurs within a single person. |
| linear communication model | A characterization of communication as a one-way event in which a message flows from sender to receiver. |
| mass communication | The transmission of messages to large, usually widespread audiences via broadcast means (such as radio and television), print (such as newspapers, magazines, and books), multimedia(such as CD-ROM, DVD, and the World Wide Web), and other forms of media such as recordings as movies. |
| mediated communication | Communication sent via a medium other than face-to-face interaction, e.g., telephone, e-mail, instant messaging. Can be both mass and personal |
| mindfulness | Awareness of one's own behavior and that of others |
| noise | External, physiological, and psychological distractions that interfere with the accurate transmission and reception of a message |
| public communication | Communication that occurs when a group becomes too large for all members to contribute. It is characterized by an unequal amount of speaking and by limited verbal feedback. |
| Receiver | One who notices and attends to a message |
| Richness | The abundance of nonverbal cues that add clarity to a verbal passage. |
| Sender | The originator of a message. |
| small group | A group of a size such that every member can participate actively with the other members |
| symbol | An arbitrary sign used to represent a thing, person, idea, event, or relationship in ways that make communication impossible |
| transactional communication model | A characterization of communication as the simultaneous sending and receiving of messages in an ongoing, irreversible process |