Aspergillus fumigatus vs fungus

Aspergillus fumigatus and fungus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aspergillus fumigatus	Yes	No	No	No
fungus	Yes	No	No	No

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

Aspergillus fumigatus: a mold causing aspergillosis in birds and man
fungus: an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia

Aspergillus fumigatus (noun)	fungus (noun)
a mold causing aspergillosis in birds and man	an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia