The kanji 階 generally refers to "stairs," "staircase," or "floor" in a building. It indicates a level or a step, whether physical like a set of stairs, or metaphorical, like a level in a structure. It implies a sense of progression, going up or down.

・On-yomi (音読み): カイ (kai) ・Kun-yomi (訓読み): きざはし (kizahashi) - This reading, while less common, means "stairs" or "steps."

⚫︎ 階段 Translation: stairs; staircase ⚫︎ 二階 Translation: second floor ⚫︎ 階級 Translation: class; rank; grade

The kanji 階 is a phono-semantic compound (形声文字, けいせいもじ). The left side is 阝, a simplified form of 阜, which originally depicted a "mound" or "hill" and later came to represent anything related to a slope or a raised area. The right side is 皆 (kai), which provides the sound and the meaning of "all," suggesting something is accessible or available to everyone at a certain level. Together, they create the idea of a level or step within a structure or on a slope.