to take the place of; to act on behalf of another; to replace

a historical period; a dynasty or stage in history

a step in a line of family descent; the period of time between the birth of parents and their children

(bound form) serving temporarily in a position or role

a Chinese surname

a state during the Sixteen Kingdoms period (310–376 AD) located in modern-day Shanxi and Inner Mongolia

(geology) a unit of geological time that is a subdivision of an eon and is further divided into periods