beard vs hair

beard and hair both are nouns.

Word	Noun	Adjective	Verb	Adverb
beard	Yes	No	Yes	No
hair	Yes	No	No	No

As nouns, hair is a hypernym of beard; that is, hair is a word with a broader meaning than beard:

beard: hairy growth on or near the face of certain mammals
hair: a covering for the body (or parts of it) consisting of a dense growth of threadlike structures (as on the human head); helps to prevent heat loss

As nouns, hair is a hypernym of beard; that is, hair is a word with a broader meaning than beard:

beard: a tuft or growth of hairs or bristles on certain plants such as iris or grasses
hair: filamentous hairlike growth on a plant

Other hypernyms of beard include fuzz, tomentum.

beard (noun)	hair (noun)
tuft of strong filaments by which e.g. a mussel makes itself fast to a fixed surface	a filamentous projection or process on an organism
hairy growth on or near the face of certain mammals	cloth woven from horsehair or camelhair; used for upholstery or stiffening in garments
the hair growing on the lower part of a man's face	a covering for the body (or parts of it) consisting of a dense growth of threadlike structures (as on the human head); helps to prevent heat loss
a person who diverts suspicion from someone (especially a woman who accompanies a male homosexual in order to conceal his homosexuality)	any of the cylindrical filaments characteristically growing from the epidermis of a mammal
a tuft or growth of hairs or bristles on certain plants such as iris or grasses	filamentous hairlike growth on a plant
	a very small distance or space

beard (verb)	hair (verb)
go along the rim, like a beard around the chin