tohle poslal boubaque na rpgf, stejný dotaz
wizard
c.1440, "philosopher, sage," from M.E. wys "wise" (see wise (adj.)) + -ard. Cf. Lith. zynyste "magic," zynys "sorcerer," zyne "witch," all from zinoti "to know." The ground sense is perhaps "to know the future." The meaning "one with magical power" did not emerge distinctly until c.1550, the distinction between philosophy and magic being blurred in the Middle Ages. As a slang word meaning "excellent" it is recorded from 1922.
sorcery
c.1300, from O.Fr. sorcerie, from sorcier "sorcerer," from V.L. *sortiarius, lit. "one who influences, fate, fortune," from L. sors (gen. sortis) "lot, fate, fortune" (see sort). Sorceress (c.1384) is attested much earlier than sorcerer (1526).
magic (n.)
c.1384, "art of influencing events and producing marvels," from O.Fr. magique, from L. magice "sorcery, magic," from Gk. magike (presumably with tekhne "art"), fem. of magikos "magical," from magos "one of the members of the learned and priestly class," from O.Pers. magush, possibly from PIE *magh- "to be able, to have power" (see machine).
zdroj: http://www.etymonline.com/ (Někdy mi ty jejich etymologie přijdou dost pochybné, ale tohle zní všechno pravděpodobně.)