A polish isn't neccessarily a glaze , but a glaze IS a form
of polish...usually with little or no abrasives and generally
containing fillers.
Glaze can be used for different reasons. I sometimes use it
to give a little extra depth or even-ness (?) before LSP if
I'm not completely satisfied with the looks of the final polishing step.
You can also use it to help cover up or "fill" any remaining flaws
in the paint that may be too minimal to warrant another polishing step.
Yet still , if you're working on very soft paint, the proper glaze can
be used to finish down the paint where a more abrasive polish
would leave behind some marring.
If you're happy with what you've achieved after polishing and don't
see the need for any more , then , by all means , go to LSP.
Personally, I don't feel it ever hurts to use a glaze as long as you're
not trying to cover up crappy work.
Click on the "learn!" icon at the top of the page for a better explanation
of the varieties of polishes and processes involved.
OR , you could use the search function.
