我们很习惯说a piece of good news,真的就只能这样说吗？其实，a good piece of news也可以是表达：一条好消息，piece类似的表达很多:

She wrote something on a small piece of paper.

她在一小片纸上写了点什么。

This new piece of evidence invalidates his version of events.

这条新证据推翻了他对事件经过的说法。

It is a technically demanding piece of music to play.

演奏这一段音乐需要有很高的技艺。

The review is a brilliant piece of writing.

这篇评论很精彩。

The article was an excellent piece of investigative journalism.

这是一篇优秀的调查研究报道。

The statue was carved out of a single piece of stone.

这座雕像是用整块石料雕成的。

He gashed his hand on a sharp piece of rock.

他的手在一块尖石头上划了一个大口子。

以上7例摘自《牛津高阶英汉双解词典》

I have an amusing piece of news you may not have heard.

我有一条逗人的消息，你可能还没有听说过。

a thoughtful piece of research一项有创见的研究

a simple piece of arithmetic 一道简单的算术题

an interesting piece of news一条有趣的信息

item,用法和piece都有类似用法，只是Item一般不与具体名词连用：

Leather jeans are the must-have fashion item of the season.

皮革牛仔裤是这一季必备的时尚服饰。

What is your favourite item of clothing?

你最喜欢的衣服是哪一件？

以上2例来自《外研社英语同义词辨析词典》

The next day Mr.Fatheringay heard two interseting items of news.

第二天法塞林盖先生听到了两条有趣的消息。

As far as he could see,not a single piece of furniture was worth a five-pound note.

他所看见的家具没有一件值五英镑。

a whole pot of tea满满的一茶壶茶水

a whole pot of jam一整罐的果酱

a hot cup of coffee一杯热咖啡