buffoon vs comedian

buffoon and comedian both are nouns.

Word	Noun	Adjective	Verb	Adverb
buffoon	Yes	No	No	No
comedian	Yes	No	No	No

As nouns, comedian is a hypernym of buffoon; that is, comedian is a word with a broader meaning than buffoon:

buffoon: a person who amuses others by ridiculous behavior
comedian: a professional performer who tells jokes and performs comical acts

Other hypernyms of buffoon include comic.

buffoon (noun)	comedian (noun)
a person who amuses others by ridiculous behavior	a professional performer who tells jokes and performs comical acts
a rude or vulgar fool	an actor in a comedy