Answer:
Quakers: Though a small religious movement, the Society of Friends (Quakers) organized relief and advocated rescue in Europe before, during, and after the Holocaust.
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Yiddish: Language spoken by many Jews in Eastern Europe; a combination of German, Hebrew and dialects of the countries in which Jews were living.
OR
Yom Kippur: Day of Atonement and a time for repenting and fasting.
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Zyklon B: A chemical developed as an insecticide, the pellets of which were shaken down an opening in the euphemistically called “shower rooms,” or gas chambers. The Nazis found this to be a quicker, cheaper and more reliable method of mass killing than carbon monoxide.
OR
Zionism: Political and cultural movement calling for the return of the Jewish people to their Biblical home.