Gairaigo (外来語) are Japanese words from (or based on) a foreign language, such as チョコレート (chokorēto), which means "chocolate." This game focuses on gairaigo derived from English.

Wasei-eigo (和製英語) are English-style words or expressions created in Japan but not used in standard English, such as ハンドルキーパー (handorukīpā), which comes from "handle-keeper" but means "designated driver." These are also included in this game.