关于英语的问题decorate的名词用法是什么时候用动词用法又是什么时候用?

decorate用法：
decorate sth.(with sth.else)
be decorated with sth.
decorations ”装饰品,点缀物品“
实例：
They all go over there to decorate the tree.
他们都跑去装饰圣诞树.
We often decorate doors and windows with paper cuts.
我们经常用剪纸来装饰门窗.
We decorate the gate with a lot of decorations.
我们用很多装饰品把大门装饰起来.

decorate: [ 'dekəreit ]
v. 装饰,装修

词形变化:
动词过去式:decorated 过去分词:decorated 现在分词:decorating 第三人称单数:decorates

例句与用法:
1. We decorated the house for Christmas.
...