What are some differences between western body language and korean body language?

In this picture, you can see people who are saying hello to someone.

When you see this you can know the differences between Korean gesture and western gesture.

Now, men is using a way of greeting in Korea.

As you can see, the girl is doing awestern style of greeting"Hi"with waving hands and not bowing like the man did.

But they are expressing it in different ways

So, I think the ways of greeting differ from country to country and from culture to culture.