How to say "concentrate" in Japanese

• 凝らすこらすCommon
  godan verb, transitive verbCovers the mental sense: concentrating your attention, thought, or effort on something. Typical when you focus intently on a task or problem and apply yourself to it.
  そのキルトは本当ほんとうによく技巧ぎこうが凝こらされていていいものですね。↗

  That quilt is really quite a piece of work with all its fine craftsmanship.
• エキスCommon
  nounThis is the noun sense: a concentrate as a substance, such as an extract or essence taken from plants or meat, or concentrated stock. Use it when 'concentrate' names a product, not an action.
  樹皮じゅひからエキスを抽出ちゅうしゅつする。↗

  Extract an essence from the bark of a tree.
• 煮詰めるにつめるCommon
  ichidan verb, transitive verbThe cooking sense: to concentrate a liquid such as soup, milk, or stock by boiling it down. Use this verb when 'concentrate' describes reducing a liquid over heat.
  スープがとろっとするまで煮につめてください。↗

  Boil the soup down until it becomes thick.

Use 「凝らす」 for concentrating attention or effort, 「煮詰める」 for boiling a liquid down to concentrate it, and 「エキス」 for a concentrate as a substance—an extract or essence.

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

• 凝らすこらすto concentrate
• エキスextract (of plants, meat, etc.)
• 煮詰めるにつめるto boil down
• 濃化のうかthicken
• 焦点を絞るしょうてんをしぼるto narrow the focus
• 精鉱せいこうrefined ore