relating to vs related to

參:http://english.stackexchange.com/questions/67703/relating-to-or-related-to

answer: 

relating to直接有關

related to間接有關

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These two words are close, and in most cases, they are interchangeable.

However, I think there is a subtle difference between the two, one I can't readily support with a good source at the moment.

"Related to" only means that there is some kind of connection while "relating to" indicates something that is about the topic.

For instance, if I asked for websites relating to english.stackexchange.com, I might expect to get meta.english.stackexchange.com, maybe some news articles that cover the site, and a blog entry by a founder.

If I asked for websites related to english.stackexchange.com, I would expect to receive those same sites listed above, but I would also expect to see other SE network websites, other English-learner websites, and perhaps other Q&A type sites.

Cambridge dictionary

relate to sb/sth

— phrasal verb with relate /rɪˈleɪt/ verb [T]

› to be connected to, or to be about someone or something

涉及；與…相關；有關

Chapter nine relates to the effects of inflation on consumers.

第九章的內容是關於通貨膨脹對消費者的影響的。

relating to

› connected with something

有關，關於；涉及

Anything relating to maths is a complete mystery to me.

和數學有關的任何東西對我來說都完全是天書。

relate to sb

— phrasal verb with relate /rɪˈleɪt/ verb [T]

›  to understand someone and be able to have a friendly relationship with them

理解（某人）；體恤（某人）

Many parents find it hard to relate to their children when they are teenagers.

很多父母感到，當孩子到了十幾歲的時候，就很難理解他們了。