Pucciniaceae vs fungus family

Pucciniaceae and fungus family both are nouns.

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

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

Pucciniaceae (noun)	fungus family (noun)
large important family of rust fungi	includes lichen families