階かい層そう制せい約やく集しゅう合ごうMeaningsNoun1. hierarchical constraint setKanji used階floor (of a building)層layer制control約promise集gather together合come togetherComposed of階かい層そうclass; level; stratum; layer; hierarchyNoun制せい約やくlimitation; restriction; condition; constraintsNoun集しゅう合ごうmeeting up; gathering; assembly; setNoun