white shark vs great white shark

white shark and great white shark both are nouns.

Word	Noun	Adjective	Verb	Adverb
white shark	Yes	No	No	No
great white shark	Yes	No	No	No

As nouns, white shark and great white shark are synonyms defined as:

white shark and great white shark: large aggressive shark widespread in warm seas; known to attack humans

Other synonyms of white shark include Carcharodon carcharias, man-eater, man-eating shark.

white shark (noun)	great white shark (noun)
large aggressive shark widespread in warm seas; known to attack humans	large aggressive shark widespread in warm seas; known to attack humans