円丘[enkyuu] knoll
丘上[kyuujou] hilltop
丘疹[kyuushin] pimple
丘陵[kyuuryou] hill
丘陵地帯[kyuuryouchitai] hill country

沙丘[sakyuu] sand dune
低丘陵[teikyuuryou] low hills
丘辺[okabe] vicinity of a hill
比丘[biku] bhikkhu (fully ordained Buddhist monk)

右岸[ugan] right bank (shore)
沿岸[engan] coast
海岸[kaigan] coast
海岸線[kaigansen] coastline
海岸通り[kaigandoori] sea-front street

岸壁[ganpeki] wharf
岸辺[kishibe] shore
護岸[gogan] river dike
向岸[mukougishi] opposite bank

一段[ichidan] more
一段動詞[ichidandoushi] ichidan verb (one of the two main conjugation classes of verbs in modern Japanese, usually ending in -eru or -iru)
一段落[ichidanraku] completing the first stage
階段[kaidan] stairs
格段[kakudan] special

計画段階[keikakudankai] planning stage
決済手段[kessaishudan] method of payment
減段[gentan] reduction (of crop size)
五段[godan] Japanese verb group
五段動詞[godandoushi] godan verb (one of the two main conjugation classes of verbs in modern Japanese, usually ending in -u, -ku, -su, -tsu, -gu, -bu, -mu, etc.)

海鷂魚[ei] ray (fish)
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一天四海[ittenshikai] the world
雲海[unkai] sea of clouds
沿海[enkai] coast

遠海[enkai] deep sea
黄海[koukai] Yellow Sea
温海[atsumi] warm sea
海の幸[uminosachi] seafood