The term 'kind of tournament' can refer to three different types of tournaments: OPEN (4 letters), ProAm (5 letters), and RoundRobin (10 letters). An OPEN tournament is one that is OPEN to all players, regardless of skill level. A ProAm tournament is a tournament that combines professional players with amateur players. Finally, a RoundRobin tournament is a tournament in which each participant plays against every other participant.