けつの穴[ketsunoana] anus
横穴[yokoana] cave
下穴[shitaana] pilot hole
穴だらけにする[anadarakenisuru] to fuck

穴凹[anaboko] hole
穴あけ器[anaakeki] (hole) punch
穴居[kekkyo] cave dwelling
穴居人[kekkyojin] cave dweller

隙人[himajin] man of leisure
間隙[kangeki] gap
空隙[kuugeki] vacant space
隙き間[sukima] crevice
手隙[teaki] not busy

手間隙[temahima] time and effort
寸隙[sungeki] spare time
隙間風[sukimakaze] draft
隙かさず[sukasazu] without a moment's delay