C968 The Six-word Riddle

"Two-dimensional language is a high-level language. It can accurately express the meaning of a word, and it can create a new word by arranging the existing words. It doesn't need to create a new word."

"For example, a car. Two wheels are called a bicycle, two wheels are called an electric bike, and four wheels are called a car. A car that runs on the railway is called a train