What does 改善 mean?
改善 is a Japanese noun meaning “betterment, improvement” in English. It is written as 改善 in kanji, かいぜん in hiragana, and kaizen in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
２国間の貿易上のアンバランスを改善しなければならない。
The trade imbalance between two nations should be improved.