Hei is for...
Havdallah: At the end of Shabbos and every holiday, the havdallah service is recited over wine (and spaices and a candle at the end of Shabbos) and marks the separation between the holy day and the rest of the week.
Halacha: Meaning "the way to go", halacha is the complex system of Jewish law, derived from the Written Torah, as put forth by the Oral Torah, as well as unique traditions held by varying ethnic and ideological communities within Judaism.
Vav is for...
Vidui: Vidui is the set of daily confession said after the silent prayer portions of the shacharis and mincha (the morning and afternoon services).
V'ahavata: The second portion of the Shema, the central prayer in Judaism, the V'ahavta spells out the commandments to love G-d, teach our children, to put mezzuzos on our doors, and wear tefillin.
