Shiva: An intense period of mourning that lasts for 7 days
Sheloshim: a 30 day period of mourning after shiva has concluded when the restrictions on activities are relaxed and the bereaved begin to resume their usual activities
Genesis 37:34: "Jacob tore his clothes, put sackcloth on his loins, and observed mourning for his son many days"
"Blessed are you the TrueJudge": Prayer said on hearing of someone's death
Dietary Laws: Ruels that deal with foods permitted to be eaten
Kosher: food that fulfills the requirements of Jewish dietary law
Trefah: Food that Jews are forbidden to eat; means 'torn
Exodus 23:19: The source in the Torah of not cooking milk and meat together.