basking shark vs Cetorhinus maximus

basking shark and Cetorhinus maximus both are nouns.

Word	Noun	Adjective	Verb	Adverb
basking shark	Yes	No	No	No
Cetorhinus maximus	Yes	No	No	No

As nouns, basking shark and Cetorhinus maximus are synonyms defined as:

basking shark and Cetorhinus maximus: large harmless plankton-eating northern shark; often swims slowly or floats at the sea surface

basking shark (noun)	Cetorhinus maximus (noun)
large harmless plankton-eating northern shark; often swims slowly or floats at the sea surface	large harmless plankton-eating northern shark; often swims slowly or floats at the sea surface