man-eater vs Carcharodon carcharias

man-eater and Carcharodon carcharias both are nouns.

Word	Noun	Adjective	Verb	Adverb
man-eater	Yes	No	No	No
Carcharodon carcharias	Yes	No	No	No

As nouns, man-eater and Carcharodon carcharias are synonyms defined as:

man-eater and Carcharodon carcharias: large aggressive shark widespread in warm seas; known to attack humans

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

man-eater (noun)	Carcharodon carcharias (noun)
large aggressive shark widespread in warm seas; known to attack humans	large aggressive shark widespread in warm seas; known to attack humans
a person who eats human flesh