beard vs vandyke

beard and vandyke both are nouns.

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

As nouns, vandyke is a hyponym of beard; that is, vandyke is a word with a more specific, narrower meaning than beard:

Other hyponyms of beard include fuzz, imperial, imperial beard, beaver, goatee, stubble, vandyke beard, Attilio, soul patch.

beard (noun)	vandyke (noun)
tuft of strong filaments by which e.g. a mussel makes itself fast to a fixed surface	a short pointed beard (named after the artist Anthony Vandyke)
hairy growth on or near the face of certain mammals
the hair growing on the lower part of a man's face
a person who diverts suspicion from someone (especially a woman who accompanies a male homosexual in order to conceal his homosexuality)
a tuft or growth of hairs or bristles on certain plants such as iris or grasses

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