お七夜[oshichiya] name-giving ceremony
七つ[nanatsu] seven
七つの海[nanatsunoumi] the seven seas
七屋[nanatsuya] pawnshop
七回忌[shichikaiki] seventh anniversary of a death

七角形[shichikakkei] heptagon
七曲がり[nanamagari] tortuous or spiral (path)
七月[shichigatsu] July
七賢[shichiken] the Seven Wise Men (of Confucius's Analects)

御竈[okama] pot
土竈[dogama] earthen kiln
七竈[nanakamado] Japanese rowan (species of mountain ash, Sorbus commixta)
竈神[kamadogami] tutelary deities of the hearth
四葉塩竈[yotsubashiogama] Chamisso's lousewort (Pedicularis chamissonis var. japonica)

南京七竈[nankinnanakamado] Sorbus gracilis (species of mountain ash)
高嶺七竈[takanenanakamado] Siberian mountain ash (Sorbus sambucifolia)
竈突[kudo] the rear of an old-fashioned Japanese hearth from which smoke was exhausted
竈風呂[kamaburo] steam bath (often using brine)