When lilah saw her guest wrinkling her nose, she realized that she should have changed the litter in her cat box. nose wrinkling is an example of communication through

Nose wrinkling due to the smell of the kitty litter is a perfect example of the kinesics.  This is in essence a nonverbal communication which through facial expressions, body movement and gestures conveys some message.  More popular term,  but not used or liked by the founder of kinesics Ray Birdwhistell, is body language.