MSN Encarta – Dictionaries – kippa: “the skullcap worn by Jewish men and boys for prayer and by Orthodox Jewish men at all times”
yarmulke: a small round cap worn by Jewish men and boys. Orthodox Jews wear the yarmulke at all times, while Conservative Jews wear it for prayer or on ceremonial occasions only.
Sephardi: Jewish person of Iberian origin: a Jewish person of Spanish or Portuguese origin, now used loosely to refer to any Jewish person who is not of German or Eastern European descent. (Sephardic)
Ashkenazi: N European Jew: a member of a Jewish community originating in Germany and northern Europe, as distinguished from a Jewish person of Spanish or Portuguese origin.