どん底[donzoko] very bottom
井底[seitei] well bottom
海底[kaitei] bottom of the ocean
海底ケーブル[kaiteikeeburu] undersea cable
丸底[maruzoko] round-bottom

基底[kitei] base
靴底[kutsuzoko] shoe sole
黒底翳[kurosokohi] black cataract
根底[kontei] root
周知徹底[shuuchitettei] (something) known to all

右折禁止[usetsukinshi] No Right Turn!
運転停止[untenteishi] suspension of operations
化学兵器禁止条約[kagakuheikikinshijouyaku] chemical weapons ban treaty
核抑止力[kakuyokushiryoku] nuclear deterrent force
鎌止め[kamadome] cutting grass and trees is prohibited

客止め[kyakudome] draw a full house
休止[kyuushi] pause
休止符[kyuushifu] rest (music)
挙止[kyoshi] bearing
禁止[kinshi] prohibition