General terms:
* Nonverbal behavior
* Body language (this is more specific to physical actions)
* Visual communication (focuses on visual aspects like gestures, expressions, etc.)
More specific terms:
* Kinesics (study of body movements and gestures)
* Proxemics (study of personal space and distance)
* Haptics (study of touch)
* Chronemics (study of time and how it is used in communication)
* Paralanguage (vocal cues like tone, pitch, and volume)
The best term to use depends on the context and what aspect of nonverbal communication you're emphasizing.