General terms:
* Beard: Hair that grows on the chin, cheeks, and neck.
* Mustache (or moustache): Hair that grows on the upper lip.
* Facial hair: An umbrella term for any hair growing on the face.
Specific styles:
* Full beard: A beard that covers the entire chin, cheeks, and neck.
* Goatee: A beard only on the chin, often trimmed to a point.
* Van Dyke: A goatee combined with a mustache, but the cheeks are clean-shaven.
* Stubble: Short, unshaven facial hair.
* Mutton chops: Thick strips of facial hair growing along the sides of the face, extending from the temples to the jawline.
* Sideburns (or sideboards): Strips of hair growing down the sides of the face in front of the ears.
* Soul patch: A small patch of hair just below the lower lip.
* Chin strap: A beard that runs along the jawline, connecting the sideburns but leaving the cheeks clean-shaven.
* Handlebar mustache: A mustache with long, upturned ends.
* Horseshoe mustache: A mustache with two vertical bars extending down to the jawline.
* Chevron mustache: A thick mustache that covers the entire upper lip.
The best term to use depends on the specific style of facial hair in question.