giant lizard vs Varanus komodoensis

giant lizard and Varanus komodoensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
giant lizard	Yes	No	No	No
Varanus komodoensis	Yes	No	No	No

As nouns, giant lizard and Varanus komodoensis are synonyms defined as:

giant lizard and Varanus komodoensis: the largest lizard in the world (10 feet); found on Indonesian islands

Other synonyms of giant lizard include dragon lizard, Komodo dragon, Komodo lizard.

giant lizard (noun)	Varanus komodoensis (noun)
the largest lizard in the world (10 feet); found on Indonesian islands	the largest lizard in the world (10 feet); found on Indonesian islands