How to say "widespread" in Japanese

• 広範こうはんCommon
  na-adjective, no-adjectiveCovers 'widespread' as broad in scope or extent: extensive, comprehensive, far-reaching. Suited to things like surveys, research, coverage, or damage stretching over a wide area rather than to popularity.
  その会社かいしゃは広範こうはんな種類しゅるいの楽器がっきを製造せいぞうしている。↗

  The company manufactures a wide variety of musical instruments.
• 盛んさかんJLPT N4approx.Common
  na-adjectiveCovers 'widespread' only through its sense of flourishing: an activity actively and widely practiced. Its core nuance is vigor and popularity, so it suits things being enthusiastically pursued, not static breadth.
  我々われわれの国くにではウインタースポーツが盛さかんだ。↗

  Winter sports are very popular in our country.

Use 広範 for 'widespread' meaning broad in scope or extent, and 「盛ん」 for 'widespread' meaning an activity actively and widely practiced, where the nuance is flourishing popularity rather than sheer breadth.

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

• 広範こうはんwide
• 汎発はんぱつpandemic
• 盛んさかんpopular