descent 和 descend用法上有什么区别? 举2个例句。

descent (noun)the state or fact of being related to a particular person or group of people who lived in the past: She's a woman of mixed/French descent. They trace their line of descent back to a French duke. He claims direct descent from Mohammed. descend (verb) [I or T] formal to go or come down: The path descended steeply into the valley. Jane descended the stairs. › [I] literary If darkness or night descends, it becomes dark and day changes to night.