bold face vs fount

bold face and fount both are nouns.

Word	Noun	Adjective	Verb	Adverb
bold face	Yes	No	No	No
fount	Yes	No	No	No

As nouns, fount is a hypernym of bold face; that is, fount is a word with a broader meaning than bold face:

Other hypernyms of bold face include case, face, font, typeface.

bold face (noun)	fount (noun)
a typeface with thick heavy lines	a plumbing fixture that provides a flow of water
	a specific size and style of type within a type family