descent 和 descend用法上有什么區(qū)別

descent 名詞
descend 動詞
We are watching the descent of the Olympic falg.
The elevator is descending slowly.

descent 名詞descend 動詞。
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)
formal to go or come down:
The path descended steeply into the valley.
Jane descended the stairs.
literary If darkness or night descends, it becomes dark and day changes to night.

作下降意思時，
descent 是名詞
descend 是動詞