What is Pogonology?

A beard is the hair that grows on a man's chin, cheeks, neck, and the area above the upper lip (the opposite is a clean-shaven face). When differentiating between upper and lower facial hair, a beard specifically refers to the facial hair on the lower part of a man's chin (excluding the moustache, which refers to hair above the upper lip and around it). The study of beards is called pogonology.
In the course of history, men with facial hair have been ascribed various attributes such as wisdom, sexual virility, or high status, but also a lack of cleanliness and refinement, or an eccentric disposition.

From wikepedia