How to say "convergence" in Japanese

• コンバージェンス
  nounThe direct loanword from English. It is less common than the kanji alternatives, which cover the more specific senses: gathering of people, power, or debate, focusing of light, convergence of the eyes.
• 集束しゅうそく
  noun, suru verb, transitive verb, intransitive verbA less common word for the focusing of light: convergence in the optical sense, rays brought to a focus. Use it when the subject is light, not people, power, or debate.
• 集中しゅうちゅうJLPT N3approx.Common
  noun, suru verb, transitive verb, intransitive verbThe common word: concentration of population, buildings, or power, centralization, and the focusing of a debate or questions. When 'convergence' means things gathering in one place, this is usually the word.
  彼かれの仕事しごとの大半たいはんが都市部としぶに集中しゅうちゅうしている。↗

  The bulk of his work is in the urban area.
• 輻輳ふくそう
  noun, suru verb, intransitive verbConvergence of the eyes, as in discussions of vision. A less common word, it is seldom the right choice for 'convergence' in general.

Use the common 集中 when 'convergence' means people, power, or debate gathering; 集束 is for light, 輻輳 for the eyes, and 「コンバージェンス」 is the less common loanword.

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

• コンバージェンスconvergence
• 集束しゅうそくfocusing (of light)
• 集中しゅうちゅうconcentration (of population, buildings, power, etc.)
• 収束しゅうそくconvergence
• 輻輳ふくそうconvergence (of the eyes)
• 収斂しゅうれんconvergence (of light)