| Word | Reading | Meaning |
| 凹凸 | おうとつ | unevenness, roughness, ruggedness |
| 凹 | おう | concave, hollow, sunken |
| 凸凹 | でこぼこ, とつおう | unevenness, roughness, ruggedness |
| 凹ます | へこます | to dent, to indent, to depress, to humiliate |
| 凹ませる | へこませる | to dent, to indent, to depress, to humiliate |
| 凹まる | くぼまる | to be low (as a hollow) |
| 凹む | へこむ | to be dented, to be indented, to yield to, to give, to sink, to collapse, to cave in; to be snubbed, to be overwhelmed, to feel down, to be forced to yield |
| 凹める | くぼめる | to hollow out |
| 凹レンズ | おうレンズ | concave lens |
| 凹み | くぼみ, へこみ | hollow, cavity, dent, depression |