Vidui
"Confession;" liturgical prayer recited throughout Yom Kippur; confessional said before death.
Yizkor
"Remember;" memorial service held on Yom Kippur and on the last day of Pesach, Shavout, and Sukkot.
Yom Kippur
"Day of Atonement;" holiest day of the Jewish year, which includes a focus on prayer, repentance and fasting.
Yom Tov
"Good Day;" the term, often pronounced as yuntiff (Yiddish) has come to mean "holiday;" "Good Yuntiff" is often used a holiday greeting.
Kabbalat Shabbat
“Receiving Shabbat.” A special collection of prayers recited to welcome Shabbat on Friday evening.
Oneg Shabbat
The "joy" of Shabbat—refers to refreshments after Shabbat services.
Shacharit
Morning prayer service. Prayed every day, though the content is different on weekdays, Shabbat, and Festivals. Derived from the Hebrew word for "dawn."
Minchah
Afternoon prayer service. Prayed every day, though the content is different on weekdays, Shabbat, and Festivals.
Maariv / Arvit
Evening prayer service. Prayed every day, though the content is different on weekdays, Shabbat, and Festivals. Derived from the Hebrew word for "evening"