The difference between triangulation and mesh

I have done some computer graphical programming recently, and I have no experience before. I used the library call CGAL(computer geometry algorithm library). Also, I noticed that there is class for triangulati开发者_StackOverflowon and also class for mesh. Is mesh just a kind of triangle net? Do they have any differences?

Thanks!

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Triangulation is one way to mesh the geometry. And it is also possible to represent geometry in different shapes.