How to say "horn" in Japanese

• 角つのCommon
  nounThe horn or antler growing on an animal's head, as in a bull's horns or a deer's antlers; this is the word for the animal feature, not for a musical instrument or a warning device.
• ホルンCommon
  nounThe brass wind instrument played in orchestras and bands; this is the word for 'horn' in the musical sense, and it is not used for animal horns or vehicle horns.
• 警笛けいてきCommon
  nounA warning sound-maker: a vehicle's horn, a whistle, or a foghorn. Use it when the emphasis is on alerting people, as when a driver sounds the horn at someone.
• ホーンCommon
  nounThe loanword for a horn as a device: a klaxon, a loudspeaker horn, or the horn on a car. It names the device itself, where 警笛 stresses the warning it gives.

Choose 角 for an animal's horn or antler, 「ホルン」 for the musical instrument, and for warning horns pick 警笛 when stressing the alert given or 「ホーン」 for the device itself, as on cars and klaxons.

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

• 角つのhorn
• ホルンhorn (musical instrument)
• 警笛けいてきhorn
• ホーンhorn (speaker, klaxon, etc.)
• らっぱtrumpet
• 角笛つのぶえhorn (instrument; made of animal horn)
• クラクション(car) horn