In order to expand the Chinese vocabulary of Chinese language learners and improve the ability of telling apart the similar words in Chinese, the following parts will focus on the explanation of three groups of words in meanings and application, namely, 交叉 and交错, 交换and交流as well as 骄傲and自豪. For the first group, 交叉means several lines of things of this shape cross together from different directions like 两条铁路再次交叉. However, 交错is to say things are complexly interlaced like 道路纵横交错. The former one emphasizes the cross things are overlapped.

When leaning the group of words 交换and交流, the teachers of one-on-one Chinese leaning programs would tell you that 交换indicates to give their own things to the other party and change. We can often hear Chinese people say 交换意见and交换位置. The objects can be both the specific things like gifts and the abstract things like opinion and information.

For the word 交流, it emphasizes both sides to provide what they have to the other side. Similar to communicate and exchange in English language, it more often appears with the forms of 互相交流and国际文化交流. Comparing with 交换, 交流has narrower scope of the objects which usually the abstract things such as culture, experience and information and so on. For example, 语言的产生，使得人们可以自由地交流思想.

The last but not least group of similar words will be illustrated to students who volunteer in China are 骄傲and自豪, both of which are applied to express someone feels proud. The first level meaning of 骄傲is to mean arrogant and look down upon someone else like他太骄傲了. In this case, it carries the negative meaning and tone. The second level meaning of 骄傲is to feel proud. You can say我们为你感到骄傲. But 自豪is a positive word to indicate someone feels honored because someone or the community related to oneself achieves certain progress. For instance, 为自己是中国人而自豪.