How to say "border" in Japanese

• 国境こっきょうJLPT N3approx.Common
  nounThe border between two countries; use it whenever 'border' means the line separating nations, as in crossing from one country into another.
  イングランドとスコットランドの間あいだの恒常的こうじょうてきな国境こっきょう戦争せんそうは終おわった。↗

  The constant border wars between England and Scotland came to an end.
• 境さかいJLPT N3approx.Common
  nounA general word for a dividing line between two areas; it can refer to a national border, but also to figurative lines where one condition ends and another begins.
  彼かれは生死せいしの境さかいをさ迷まよった。↗

  He hovered between life and death.
• ボーダーCommon
  nounThe loanword, used mainly for a border drawn around text, an image, or a page in design and layout; it is not the word for a border between countries.
• 境界きょうかいJLPT N2approx.Common
  nounA boundary line separating two areas, domains, or fields, in concrete or abstract uses; the word to reach for when you mean a boundary or limit in general rather than a national border.
  彼かれらは境界きょうかいを越こえてスペインに入はいった。↗

  They crossed the border into Spain.
• 枠わくJLPT N1approx.Common
  noun, noun (suffix)Really 'frame' or 'box'; it suits 'border' only when you mean a frame or outline drawn around something, and is not used for boundaries between countries or areas.

Choose 国境 for the line between countries, 境界 for boundaries between areas or domains, 境 for a dividing line in general, 「ボーダー」 for drawn borders in design, and 枠 only for a frame or box.

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

• 国境こっきょうborder (between countries)
• 境さかいborder
• ボーダーborder
• 境界きょうかいboundary
• 外枠そとわくborder
• 境界けいかいland boundary
• 縁取るふちどるto border
• 国境線こっきょうせんborder
• 境域きょういきboundary
• 太線ふとせんheavy line (for emphasis)
• 縁辺えんぺんedge
• 相接するあいせっするto be adjacent (with each other)
• 枠わくborder
• 垣根かきねborder
• 水際みずぎわbefore coming ashore
• 界かいborder
• 罫線けいせんborder