Original: Three-cushion billiards retains great popularity in parts of Europe, Asia, and Latin America, and is the most popular carom billiards game played in the US today, where pool is far more widespread.
Simplified: Three-cushion billiards is the most popular carom billiards game played in the U.S. today, where pocket billiards (pool) is far more widespread. Three-cushion retains great popularity in parts of Europe, Asia, and Latin America.