How to say "relevance" in Japanese

• 関連かんれんJLPT N3approx.Common
  noun, suru verb, intransitive verbRelevance as a connection or link to the matter at hand. Being the common word of the three, it is usually the one to reach for when something is related to the subject.
  この事実じじつはお互たがいに関連かんれんし合あっている。↗

  These facts are mutually related.
• 関連性かんれんせい
  nounTreats relevance as relatedness — the quality of being related — rather than the connection itself; use it when you are discussing that quality, not simply stating that things are connected.
• 剴切がいせつ
  na-adjective, nounRelevance here means aptness — being pertinent and fitting to the matter — since its main senses are appropriateness and adequacy; being less common, it is seldom the word you want for plain relevance.

Use 関連 for relevance as a connection to the matter at hand, 関連性 for the quality of being related, and 剴切 only when relevance amounts to aptness or appropriateness.

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

• 関連かんれんrelation
• 関連性かんれんせいrelatedness
• 剴切がいせつappropriateness