How to say "button" in Japanese

• ボタンCommon
  nounA button on clothing, such as on a shirt or coat. This is the word for the buttons that fasten clothes.
  コートのボタンが取とれてたんだ。↗

  A button has come off my coat.
• つまみCommon
  nounA knob or handle: a part you grip with the fingers and turn or pull, as on appliances and equipment. 'Button' is only a secondary sense, covering such controls rather than buttons in general.
  このつまみを回まわすことでテレビの色いろを調節ちょうせつできます。↗

  You can adjust the color on the TV by turning this knob.

Use 「ボタン」 for the buttons that fasten clothing; use 「つまみ」 for knobs and handles — parts you grip and turn — whose 'button' sense is secondary.

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

• ボタンbutton (clothing)
• つまみknob
• 止めるとめるto fix (in place)