| Subject | English | Japanese |
| gen. | n drastic improvement of appearance via makeup | 化粧栄え |
| gen. | n drastic improvement of appearance via makeup | 化粧映え |
| gen. | n yoji improvement of one's constitution | 体質改善 |
| gen. | improvement of forest cover type | 林相回復 |
| gen. | n yoji improvement of labor conditions | 待遇改善 (labour) |
| gen. | n improvement of management foundation | 経営基盤の充実 |
| gen. | n improvement of relations | 関係改善 |
| gen. | improvement of river environment | 河川環境改善 |
| gen. | improvement of riverbank | 河岸の改善 |
| gen. | improvement of the existing road | 現道改良 |
| gen. | n points of improvement | 改善点 (かいぜんてん) |
