Rummikub – The popular game of Rummikub, invented around 1940.

Set – a set can either be a Group or a Run.

Group – 3 or 4 tiles of the same number but different color.

Run – 3 or 4 tiles with consecutive numbers and the same color.

Tile – a game tile in Rummikub is numbered and colored in either black, blue, orange, or red (except for the two Joker tiles which are neutral colored).

Joker – the joker tile can replace tiles in sets.

Manipulation – this is when each player tries to place on the table as many tiles as possible.

Initial meld – the first move in the game when each player must place sets on the table valued at 30 points or more.

Sabra Rummikub – the most popular Rummikub variation is the Sabra Rummikub.

American Rummikub – a Rummikub variation that first appeared in 1978. It is similar to Romanian Tile Rummy.

International Rummikub – a sophisticated Rummikub variation that resembles American Rummikub. It also incorporates special hands that are reminiscent of Mahjongg special hands.

Ephraim Hertzano – the inventor of Rummikub.

Rummy – a game usually played by 2 to 4 players, and either a fixed number of deals are played, or the game is played to a target score. The game is played with a standard 52 deck of cards.