what are the difference of between glGenBuffers and glGenFramebuffers and glGenRenderbuffers

Question

the description of them in http://www.khronos.org/opengles/sdk/docs/man/ are almost same. The only difference is the name

Answer 1

glGenBuffers creates regular buffers for vertex data, etc.

glGenFrameBuffers creates a framebuffer object primarily used as render targets for offscreen rendering.

glGenRenderBuffers creates a renderbuffer object that are specifically used with framebuffer objects for any depth-testing required.