is OWL-s & DAML-S is the same thing?

Hi all,
i need to know if OWL-s & DAML-S is the same thing? if no, tell me with the
difference between them. i know that the owl-s file has the extension .owl,
so what is the extension of DAML-S ?


-- 
Eman Hossny,
Teacher Assistant,
Computer Science Department,
Faculty of Computers and Information
Cairo University, Egypt

يارب العتق من النار لى ولوالديا