階かい層そう分ぶん類るい体たい系けいMeaningsNoun1. hierarchical classification systemKanji used階floor (of a building)層layer分part類kind (of something)体body系lineageComposed of階かい層そうclass; level; stratum; layer; hierarchyNoun分ぶん類るいclassification; categorization; sortingNoun体たい系けいsystem; organization; organisation; architectureNoun