| term | Description |
|---|---|
| voice | |
| language | |
| sign language | |
| Braille | |
| hand gestures | |
| smoke signal | |
| motion | |
| interpersonal | |
| body language | |
| cross-cultural | |
| verbal | |
| oral | |
| written | |
| facial expression | |
| volume | |
| tone | |
| intonation | |
| formal | |
| informal | |
| visual | |
| nonverbal | |
| semaphore | |
| telephone | |
| letter | |
| telegraph | |
| gestures | |
| hieroglyphics |