flying lizard vs flying dragon

flying lizard and flying dragon both are nouns.

Word	Noun	Adjective	Verb	Adverb
flying lizard	Yes	No	No	No
flying dragon	Yes	No	No	No

As nouns, flying lizard and flying dragon are synonyms defined as:

flying lizard and flying dragon: any of several small tropical Asian lizards capable of gliding by spreading winglike membranes on each side of the body

Other synonyms of flying lizard include dragon.

flying lizard (noun)	flying dragon (noun)
any of several small tropical Asian lizards capable of gliding by spreading winglike membranes on each side of the body	any of several small tropical Asian lizards capable of gliding by spreading winglike membranes on each side of the body