黄道十二宮[koudoujuunikyuu] twelve signs of the zodiac
丸十[marujuu] cross in a circle
五十音[gojuuon] the Japanese syllabary
五十音順[gojuuonjun] the syllabary order
五十三次[gojuusantsugi] the 53 Toukaidou stages

五十年祭[gojuunensai] jubilee
五十歩百歩[gojuppohyappo] six of one and a half dozen of the other
五十路[isoji] age fifty
三十戸[sanjikko] thirty houses
三十三所[sanjuusansho] any of a number of sets of thirty-three holy places enshrining Avalokitesvara (esp. those comprising a popular pilgrimage in the Kinki region)

遺戒[ikai] one's last caution
戒める[imashimeru] to admonish
戒厳令[kaigenrei] martial law
戒護[kaigo] safe custody
戒告[kaikoku] admonition

戒名[kaimyou] posthumous Buddhist name
戒律[kairitsu] (religious) precept
訓戒[kunkai] warning
警戒[keikai] vigilance
警戒心[keikaishin] wariness