How to say "localization" in Japanese

• ローカライズ
  noun, suru verb, transitive verbCovers localization of software and similar products, adapting them to a particular locale. A loanword, typically used as a verb (ローカライズする) in tech and business contexts.
  とある映画えいがを文庫化ぶんこかした―いや、映画えいがの為ために書かかれたシナリオを小説しょうせつとして加筆かひつ修正しゅうせいし、日本語にほんごにローカライズしたものだ。↗

  A certain movie was novelized - rather it was a scenario written for a movie that was expanded as a novel and localized to Japanese.
• 局在きょくざい
  noun, suru verb, intransitive verbMeans localization in the sense of existing only in a certain area, as in science and medicine where something is confined to one region. It does not mean adapting software or products, so it is not the word you want in tech contexts.
• ローカリゼーション
  nounThe full loanword for localization, covering the same territory as ローカライズ. Used in tech and business writing, often for the concept or process rather than the action.
• 現地化げんちか
  nounLocalization as adaptation to a local area or market. A native-derived word usable for products and business operations becoming suited to local conditions, not restricted to software.
• 地域化ちいきか
  noun, suru verb, transitive verbGlossed as localization of software and similar products, making it a candidate alongside ローカライズ in tech contexts. It is the least established of the software-related options, so ローカライズ or ローカリゼーション is usually the safer choice.

For software or product localization, use 「ローカライズ」, 「ローカリゼーション」, 現地化, or 地域化; 局在 is a scientific term for something being confined to a particular area, not adaptation of products.

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

• ローカライズlocalization (of software, etc.)
• 局在きょくざいlocalization
• ローカリゼーションlocalization
• 現地化げんちかlocalization
• 地域化ちいきかlocalization (of software, etc.)
• 限局げんきょくrestriction
• 不拡大ふかくだいnonexpansion
• 多言語化たげんごかmultilingualization