varan vs monitor lizard

varan and monitor lizard both are nouns.

Word	Noun	Adjective	Verb	Adverb
varan	Yes	No	No	No
monitor lizard	Yes	No	No	No

As nouns, varan and monitor lizard are synonyms defined as:

varan and monitor lizard: any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles

Other synonyms of varan include monitor.

varan (noun)	monitor lizard (noun)
any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles	any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles