genus Roccus vs Roccus

genus Roccus and Roccus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Roccus	Yes	No	No	No
Roccus	Yes	No	No	No

As nouns, genus Roccus and Roccus are synonyms defined as:

genus Roccus and Roccus: a genus of Serranidae, including the common marine striped bass (Roccus)

genus Roccus (noun)	Roccus (noun)
a genus of Serranidae, including the common marine striped bass (Roccus)	a genus of Serranidae, including the common marine striped bass (Roccus)