Translation guide
The English word 'improvement' can refer to making something better, a change that makes something better, or the process of getting better. In Japanese, the most common and versatile word is 改善 (kaizen), but other words like 向上 (koujou), 進歩 (shinpo), and 改良 (kairyou) are used depending on what is improving and how.
Expressing that something has been made better, often through deliberate effort, in areas like processes, systems, conditions, or quality.
The most common and versatile word for 'improvement'. It implies making something better, often through systematic effort. Used for processes, systems, working conditions, business, etc.
業務プロセスの改善が必要です。
We need to improve our business processes.
彼は生活習慣の改善に取り組んでいる。
He is working on improving his lifestyle habits.
Focuses on raising the level or standard of something, often used for skills, abilities, quality of life, or morale. Implies an upward movement.
Used for improving tangible things, especially products, tools, machines, or breeds of plants/animals. Implies modifying or refining something to make it better.
Means 'progress' or 'advancement'. Often used for gradual improvement over time, especially in technology, science, or personal development. Can imply a step forward.
Specifically refers to improvement in a skill or art through practice, like sports, music, or language. Used for personal skill development.
Referring to a concrete change, modification, or enhancement that results in improvement.
Literally 'improvement point'. Used to refer to a specific area or item that has been improved or needs improvement.
このシステムにはまだ改善点がある。
There are still areas for improvement in this system.
A specific improvement made to a product or tool.
新モデルの改良点を説明してください。
Please explain the improvements in the new model.
A phrase meaning 'the points that were improved'. More descriptive than 改善点.
改善された点をリストアップした。
We listed the improvements that were made.
Describing the ongoing process or state of becoming better, often without specifying an agent.
Can also refer to the process of improvement, especially when used with verbs like 進む (to progress) or 見られる (to be seen).
状況は徐々に改善している。
The situation is gradually improving.
Used for the process of rising in level or standard.
Often used for gradual progress over time.
A simple, colloquial way to say 'get better' or 'improve'. Very common in everyday speech.
天気は午後から良くなるでしょう。
The weather will improve in the afternoon.
彼の体調はだんだん良くなっている。
His health is gradually improving.
Focusing on personal development in areas like language, sports, or arts.
The standard word for improvement in a skill through practice.
毎日練習すれば必ず上達します。
If you practice every day, you will definitely improve.
Used for raising the level of a skill, often in formal contexts.
An idiomatic phrase meaning 'to improve one's skill', literally 'raise one's arm'. Casual.
彼は料理の腕を上げた。
He improved his cooking skills.
改善 (kaizen) is for abstract things like systems, processes, or conditions. 改良 (kairyou) is for concrete things like machines or products. 向上 (koujou) is for raising the level of something like skills or quality of life. 進歩 (shinpo) emphasizes progress over time, often in technology or personal growth.
While 改善 can be used for personal habits or lifestyle, it sounds unnatural for skills like language or sports. Use 上達 or 向上 instead.
社員のモチベーション向上が課題だ。
Improving employee motivation is a challenge.
語学力の向上を目指しています。
I'm aiming to improve my language skills.
このソフトウェアは大幅に改良された。
This software has been greatly improved.
品種改良によって収穫量が増えた。
The yield increased through selective breeding (improvement of the variety).
The progress (improvement) in medicine is remarkable.
彼の英語は少しずつ進歩している。
His English is improving little by little.
ピアノが上達してきた。
My piano playing has improved.
生活水準の向上が見られる。
We can see an improvement in the standard of living.
Technology is improving day by day.
コミュニケーション能力の向上に努める。
Strive to improve communication skills.