genus Tilletia vs fungus genus

genus Tilletia and fungus genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Tilletia	Yes	No	No	No
fungus genus	Yes	No	No	No

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

genus Tilletia (noun)	fungus genus (noun)
a genus of fungi belonging to the family Tilletiaceae	includes lichen genera