| 丘 | oka | hill; elder; empty; a name |
| 丠 | oka | hill; elder; empty; a name |
| 坏 | oka tsuki | rotten, spoilt, bad, broken down |
| 邱 | oka | surname; hill; mound; grave |
| 阜 | oka | mound; abundant, ample, numerous |
| 坵 | oka | earthenware, earthenware vessel |
| 坯 | oka | dam, embankment; weir |
| 岡 | oka | ridge or crest of hill |
| 冢 | tsuka oka yashiro | burial mound, mausoleum; grand |
| 崗 | oka | post; position |
| 陸 | oka | land, continental; army; an accounting form of 六 六 (six) |
| 陵 | misasagi shinogu oka | hill, mound; mausoleum |
| 堈 | kame oka | earthen jug, crock, cistern |
| 塔 | tera oka | tower, spire, tall building |
| 壔 | toride tsuka oka tsutsumi | a mound, a tumulus |
| 隴 | une oka | mountain located between Shanxi |