apatosaur vs thunder lizard

apatosaur and thunder lizard both are nouns.

Word	Noun	Adjective	Verb	Adverb
apatosaur	Yes	No	No	No
thunder lizard	Yes	No	No	No

As nouns, apatosaur and thunder lizard are synonyms defined as:

apatosaur and thunder lizard: huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic

Other synonyms of apatosaur include apatosaurus, Apatosaurus excelsus, brontosaur, brontosaurus.

apatosaur (noun)	thunder lizard (noun)
huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic	huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic