How to say "customs" in Japanese

• 関税かんぜいJLPT N1approx.Common
  nounThe tax sense: duties or tariffs that a government charges on goods crossing its borders. Use this when 'customs' means the payment itself, not the office or social practices.
  関税かんぜい申告書しんこくしょが必要ひつようになります。↗

  A customs declaration is required.
• 風俗ふうぞくJLPT N1approx.Common
  nounManners and customs in the cultural sense: the practices and ways of life of a people or period. On its own, though, the word is often taken to mean the sex-entertainment trade.
  その地方ちほうではその古ふるい風俗ふうぞくがなお存続そんぞくしている。↗

  The old custom is still kept up in that district.
• 税関ぜいかんJLPT N2approx.Common
  nounThe institution sense: the government office that collects duties and inspects goods at the border. Use this for 'customs' as a place or organization, as in going through customs at the airport.
  税関ぜいかんでは長ながい列れつが出来できているだろう。↗

  There will be long lines at the Customs.

Choose by sense: 関税 is the duty or tariff itself, 税関 the border office that handles it, and 風俗 the manners and customs of a society, though alone it often suggests the sex trade.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 関税かんぜいcustoms (duties)
• 風俗ふうぞくmanners
• 税関ぜいかんcustoms
• カスタムズcustoms
• 風儀ふうぎmanners
• カスタムcustoms (government agency)