Can anybody explain how rendering differs from rasterization especially in the context of font rendering (why not font rasterization)?
Can rendering be called a special technique (like greyscale rendering and subpixel rendering) before the rasterizer rasterizes the image?
Rendering is a broad term that generally means transforming computer-readable information, for example objects in a 3d scene, to one or more images.
Rasterization is a more specific term that typically means the process of transforming a vector (curve based) image to a rasterized (pixel based) image.