Scrabble of points for each lettered tile is based on the letter's frequency in standard English; commonly used letters such as vowels are worth one point, while less common letters score higher, with Q and Z each worth 10 points. The game also has two blank tiles that are unmarked and carry no point value. The blank tiles can be used as substitutes for any letter; once laid on the board, however, the choice is fixed. Other language sets use different letter set distributions with different point values. Tiles are usually made of wood or plastic and are square and thick,
Scrabble letter distributions "H" tile in place of the "CH" tile, two "L" tiles for the "LL" tile, or two "R" tiles for the "RR" tile is also not allowed in Spanish Scrabble (see rules in Spanish provided by the FISE). Spanish-language sets sold within North America (known as "Scrabble – Edición en Español") use - including "K" and "W" but without "CH" - these 103 tiles: Stress accents are still disregarded. Arguably the "K" and "W" tiles should not be included in this Scrabble set, but they are anyway, so that loanwords can be played. Spanish-language sets sold within Latin America under