How to say "forum" in Japanese

• フォーラムCommon
  nounThe loanword, and the natural choice when 'forum' means a public meeting or event organized for discussion, or an online forum where people post and reply.
• 広場ひろばJLPT N2approx.Common
  nounA physical open space — a public square, plaza, or piazza. It matches 'forum' only in the original architectural sense, as in the Roman Forum, not in the sense of a discussion venue.
  何千なんぜん人にんもの人々ひとびとが広場ひろばにひしめき合あっていた。↗

  Thousands of people were milling around in the square.
• 土俵どひょうJLPT N1approx.Common
  nounLiterally the sumo ring; figuratively, the arena in which a debate or contest is played out. Choose it when discussion is framed as a contest; it is not a neutral word for a forum.

Use 「フォーラム」 for a forum as a discussion event or online board, 広場 only for the original open-square sense, and 土俵 when discussion is framed as an arena or contest.

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

• フォーラムforum
• 広場ひろばpublic square
• フォルムforum (in an ancient Roman city)
• 討論会とうろんかいdebate
• 土俵どひょうforum (e.g. for discussion)