Astragalomancy vs. Cleromancy — What's the Difference?

Astragalomancy, also known as astragyromancy, is a form of divination that uses dice specially marked with letters or numbers. Originally, as with dice games, the "dice" were knucklebones or other small bones of quadrupeds.

Cleromancy is a form of sortition (casting of lots) in which an outcome is determined by means that normally would be considered random, such as the rolling of dice, but that are sometimes believed to reveal the will of God, or other universal forces and entities.

Divination by dice made from huckle-bones. They have four flat sides and two round sides which were marked.

Divination by the casting of lots.

Divination by throwing astragaloi (see etymology above) onto the pages of a picture book.

Divination by casting lots (sortilege).

Simply divination by dice.

Divination by throwing dice or any such marked objects, like beans, pebbles, or bone.

Divination by means of small bones or dice.

A divination by throwing dice or casting lots.