花咲く[hanasaku] to bloom
狂い咲き[kuruizaki] off-season flowering
咲き溢れる[sakikoboreru] to bloom all over
咲き出す[sakidasu] to begin to bloom
咲乱れる[sakimidareru] to bloom in profusion

咲く[saku] to bloom
咲い[warai] laugh
咲う[warau] to laugh
遅咲[osozaki] late blooming (flower, talent)
二度咲き[nidozaki] second blooming

まっ四角[masshikaku] square
一天四海[ittenshikai] the world
下四半期[shimoshihanki] last quarter (of the year)
弦楽四重奏曲[gengakushijuusoukyoku] string quartet
再三再四[saisansaishi] repeatedly

三寒四温[sankanshion] alternation of three cold and four warm days
四つ[yottsu] four
四つんばい[yotsunbai] (crawl) on all fours
四つ角[yotsukado] four corners
四つ足[yotsuashi] four-footed (animal)

夏季休暇[kakikyuuka] summer vacation
季刊[kikan] quarterly (e.g. magazine)
季語[kigo] seasonal word (in haiku)
季候[kikou] season
季節[kisetsu] season

季節はずれ[kisetsuhazure] unseasonable
季節的[kisetsuteki] seasonal
季節風[kisetsufuu] seasonal winds
四季[shiki] four seasons
冬季[touki] (season of) winter