Satan is the Devil.
(noun)Lucifer is an example of Satan.
See Satan in Webster's New World College Dictionary
noun
Origin: ME < OE < LL(Ec) < Gr(Ec) < Heb satan, adversary, prob. < śṭn, to be adverse, plot against
See Satan in American Heritage Dictionary 4
noun
Origin:
Origin: Middle English
Origin: , from Old English
Origin: , from Late Latin Satān
Origin: , from Greek Satanas, Satān
Origin: , from Hebrew śāṭān, devil, adversary
Origin: , from śāṭan, to accuse, act as adversary; see śṭn in Semitic roots
.Learn more about Satan