genus Brontosaurus vs genus Apatosaurus

genus Brontosaurus and genus Apatosaurus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Brontosaurus	Yes	No	No	No
genus Apatosaurus	Yes	No	No	No

As nouns, genus Brontosaurus and genus Apatosaurus are synonyms defined as:

genus Brontosaurus and genus Apatosaurus: large quadrupedal herbivorous dinosaurs with very long neck and tail; late Jurassic

genus Brontosaurus (noun)	genus Apatosaurus (noun)
large quadrupedal herbivorous dinosaurs with very long neck and tail; late Jurassic	large quadrupedal herbivorous dinosaurs with very long neck and tail; late Jurassic