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)

家宝[kahou] heirloom
擬宝珠[giboshi] ornamental railing top
合成宝石[gouseihouseki] synthetic gems
国宝[kokuhou] national treasure
財宝[zaihou] treasure

三重宝冠[sanjuuhoukan] (papal) triple tiara
至宝[shihou] most valuable asset
七宝[shippou] the 7 treasures (gold, silver, pearls, agate, crystal, coral, lapis lazuli)
什宝[juuhou] treasured article
重宝がる[chouhougaru] to find useful