Cetorhinus maximus vs basking shark

Cetorhinus maximus and basking shark both are nouns.

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

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

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

Cetorhinus maximus (noun)	basking shark (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