Cryptacanthodes vs fish genus

Cryptacanthodes and fish genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cryptacanthodes	Yes	No	No	No
fish genus	Yes	No	No	No

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

Cryptacanthodes: a genus of Stichaeidae, commonly known as wrymouths (Cryptacanthodes)
fish genus: any of various genus of fish

Cryptacanthodes (noun)	fish genus (noun)
a genus of Stichaeidae, commonly known as wrymouths (Cryptacanthodes)	any of various genus of fish