Chytridiaceae vs fungus family

Chytridiaceae and fungus family both are nouns.

Word	Noun	Adjective	Verb	Adverb
Chytridiaceae	Yes	No	No	No
fungus family	Yes	No	No	No

As nouns, fungus family is a hypernym of Chytridiaceae; that is, fungus family is a word with a broader meaning than Chytridiaceae:

Chytridiaceae (noun)	fungus family (noun)
a family of aquatic fungi of order Chytridiales	includes lichen families