The Ouija board also known as a spirit/fire key board or talking board, is a flat board marked with the letters of the alphabet, the numbers 0-9, the words "yes", "no", "hello" and "goodbye", and other symbols and words are sometimes also added to help personalize the board. It is a registered trademark

Trademark

A trademark, trade mark, or trade-mark is a distinctive sign or indicator used by an individual, business organization, or other legal entity to identify that the products or services to consumers with which the trademark appears originate from a unique source, and to distinguish its products or...

 of Hasbro Inc., which markets and distributes the Ouija Board as part of its line of board games.