カイ
きざはし
階, ⻖, 皆, 比, 匕, 白, 日
阜
storey, stair, counter for storeys of a building
段階(だんかい): grade; level; stage; class; phase; steps; order; gradation
階級(かいきゅう): (social) class; rank; grade
階段(かいだん): stairs; stairway; staircase
階(かい): (1) storey; story; floor (2) stairs (3) stage (in chronostratigraphy) (4) counter for storeys and floors of a building
二階建て(にかいだて): two-storied building
階層(かいそう): class; level; stratum; layer; hierarchy