How to say "expertise" in Japanese

• ノウハウCommon
  nounA loanword from 'know-how', it covers expertise as practical knowledge of how to get things done in a field or task. Typical in business and technical talk about methods and the knack acquired by doing.
  以上いじょうのように、実じつにシンプルな誰だれでも出来できるノウハウで十分じゅうぶんな利益りえきと顧客こきゃくは確保かくほできるのです！↗

  As shown above, it is possible to obtain ample profit and customers with truly simple know-how that anyone can do!
• 熟練じゅくれんCommon
  noun, suru verb, intransitive verbCovers expertise as proficiency: a high level of skill built up through long experience and repeated practice. Suits talk of veteran workers, craftsmen, or professionals whose degree of skillfulness is the point.
  彼かれはそのゲームに熟練じゅくれんしていた。↗

  He was an old hand at the game.

Use 「ノウハウ」 for expertise as practical know-how — accumulated knowledge of how to do something — and 熟練 for expertise as proficiency, the refined skill built up through long practice and experience.

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

• ノウハウknow-how
• 熟練じゅくれんskill
• 専門技術せんもんぎじゅつexpertise
• 専門知識せんもんちしきexpertise
• 専門知せんもんちexpertise
• 専門的知識せんもんてきちしきexpert (technical) knowledge
• 専門性せんもんせいspecialization