I hate the use of "granular" in a relative context. If water is not granular, and ice cubes are granular, what does it mean for some ice cubes to be more granular than other ice cubes? Are the cubes in question larger or smaller?
Fluids generally aren't composed of grains, where as cubes of ice are grains... More granularity typically means of finer grains... so smaller ice cubes are more fine grained, more granular. [0]
0 - Wikipedia: "The concepts granularity, coarseness, and fineness are relative..."