Glaze and grit suspensions: differences & similarities

Glaze and grit suspensions are made up of a liquid part (usually made-up of water and one or more rheological chemicals) and a dispersed solid part.However, these two different suspensions show a lot of differences that may lead to very contrasting results, also implying a different approach about chemicals, both during the grinding phase and along the glazing line.From this point of view, all chemicals involved must be marked by specific features according their intened use. What do we need to know about the subject?