• 通行つうこう — passage / traffic
• 交通こうつう — transportation / traffic
• 通訳つうやく — interpretation / interpreter
• 通信つうしん — communication / correspondence
• 通話つうわ — phone call
• 通帳つうちょう — bankbook

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The character 通 combines the radical for movement (辶) with elements suggesting direction and connection. It’s deeply tied to modern life — from commuting and interpreting to data transmission and transportation. It reflects both physical movement and the flow of information or understanding.

通学つうがくに電車でんしゃを使つかいます。
I use the train to commute to school.

彼かれは英語えいごに通つうじています。
He is fluent in English.