different between tyrannosaurus vs tyrannosaur

English

Wikispecies

From New Latin Tyrannosaurus, from Ancient Greek ???????? (túrannos, “tyrant”) + ?????? (saûros, “lizard”).

tyrannosaurus (plural tyrannosauri or tyrannosauruses)

A large carnivorous dinosaur, of the genus Tyrannosaurus, found in North America during the late Cretaceous period.

From translingual Tyrannosaurus.

tyrannosaur (plural tyrannosaurs)

Any large bipedal carnivorous dinosaur, of the family Tyrannosauridae, that lived in North America during the Cretaceous period.