| Subject | English | Japanese |
| gen. | method for solving a problem | 方程式 ichi1 news2 nf25 (hōteishiki) |
| gen. | exp n method of questioning that leads to the identification of the root causes of a problem | なぜなぜ分析 |
| gen. | n problem method | プロブレム・メソッド |
| gen. | n problem method | プロブレムメソッド |