• 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
• 通勤つうきん — commuting to work
• 通学つうがく — commuting to school
• 通用つうよう — to be accepted / to be in common use
• 通知つうち — notice / notification
• 通報つうほう — report / tip-off (to authorities)

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.