| English | eng-000 |
| secret formula | |
| Deutsch | deu-000 | Geheimlehre |
| Deutsch | deu-000 | Geheimmethode |
| Deutsch | deu-000 | Geheimrezept |
| Deutsch | deu-000 | Mysterium |
| Deutsch | deu-000 | geheime Überlieferung |
| English | eng-000 | esoterica |
| English | eng-000 | essence |
| English | eng-000 | mysteries |
| English | eng-000 | mystery |
| English | eng-000 | secret |
| English | eng-000 | secret process |
| English | eng-000 | secrets |
| 日本語 | jpn-000 | 奥義秘伝 |
| 日本語 | jpn-000 | 秘伝 |
| 日本語 | jpn-000 | 秘法 |