A staircase or flight of stairs in a building.

A level or stage in a series of steps.

स्तर

English Usage: He is on the first stair of his career.

Hindi Usage: वह अपने करियर के पहले स्तर पर है।

To perform a task or duty, especially a physical or mental effort.

काम करना

English Usage: I need to stair-work on my garden this weekend.

Hindi Usage: मुझे इस सप्ताहांत अपने बाग में काम करना है।