Rhizoctinia solani vs potato fungus

Rhizoctinia solani and potato fungus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rhizoctinia solani	Yes	No	No	No
potato fungus	Yes	No	No	No

As nouns, Rhizoctinia solani and potato fungus are synonyms defined as:

Rhizoctinia solani and potato fungus: fungus causing a disease in potatoes characterized by black scurfy spots on the tubers

Other synonyms of Rhizoctinia solani include Pellicularia filamentosa.

Rhizoctinia solani (noun)	potato fungus (noun)
fungus causing a disease in potatoes characterized by black scurfy spots on the tubers	fungus causing a disease in potatoes characterized by black scurfy spots on the tubers