different between pterosaur vs archosaur

English

From Ancient Greek ?????? (pterón, “wing”) +?????? (saûros, “lizard”), literally translating to "wing lizard".

pterosaur (plural pterosaurs)

Any of several flying reptiles, of the extinct order Pterosauria, including the pterodactyls. [from c. 1860]
- 2020, Shona Husk, Close to the Truth, HarperCollins Australia (?ISBN)
  Batsquatch, pterosaurs and the River Man. She had three weeks in Washington State tracking down the local legends. There was nothing ordinary about her job as the biologist on the television show Cryptid or Hoax?

From New Latin Archosauria (“taxonomic division of extinct reptiles”), from ????? (árkh?n, “leader”) + ????? (saúra, “lizard”)

archosaur (plural archosaurs)

A reptile of the taxon Archosauria, which includes the extinct dinosaurs, plesiosaurs, pterosaurs and ichthyosaurs and modern crocodiles and birds.

Send