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| Авка; Ока (город в Нигерии); ока (единица измерения) | |||
| Ока | |||
| ока (土耳其近东巴尔干半岛一些国家的重量及容量单位，各国不同) | |||
| 奥卡: 205 phrases in 12 subjects |
| Astronomy | 1 |
| British English spelling | 1 |
| General | 100 |
| Geography | 68 |
| Geology | 1 |
| Given name | 5 |
| Mathematics | 4 |
| Medical | 2 |
| Military | 2 |
| Surname | 18 |
| Technology | 2 |
| Toponym | 1 |