两个单词的含义不同。Nation表示的是国家、民族，比如中国；而nationality的意思是国籍，比如说“你拥有中国国籍”就是“You have a Chinese nationality”。

Nation的例句

I was told that Spain is a romantic nation.

有人告诉我说，西班牙是个浪漫的国家。

The nation levied all able-bodied man for the war.

国家征召所有壮丁参战。

My judgement was frequently faulty, but my loyalty to the nation could not be questioned.

我的判断经常出错，但是我对祖国的忠诚是无可置疑的。

Nationality的例句

What is your nationality?

你的民族是什么？

What nationality are you?

你是什么国籍？

What nationality is he?

他是什么国籍？