How to say "plane" in Japanese

• 削るけずるJLPT N2approx.Common
  godan verb, transitive verbThe verb sense of 'plane': to smooth a surface by shaving off thin layers, as of wood. It also covers shaving, sharpening a pencil, and whittling.
  私はナイフで鉛筆えんぴつを削けずった。↗

  I sharpened a pencil with a knife.
• 平面へいめんCommon
  nounThe geometric sense: a plane as a flat, level surface, the noun used in mathematics and geometry. It has no connection to aircraft or to shaping wood.
• 飛行機ひこうきJLPT N5approx.Common
  nounCovers 'plane' in the sense of an airplane or aircraft. Use it whenever the word means the flying vehicle, as in travel contexts such as catching a plane.
  あなたは飛行機ひこうきで旅行りょこうしたことがありますか。↗

  Have you ever traveled by air?

Use 「削る」 for the verb 'to plane', meaning to shave a surface smooth; 平面 for a plane as a flat geometric surface; and 飛行機 for a plane you fly in.

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

• 削るけずるto shave (wood, leather, etc.)
• 平面へいめんlevel surface
• 飛行機ひこうきairplane
• プレーンplane
• かんなplane (woodworking tool)