The weatherman is forecasting 'heavy/light snow'. [=the weatherman is saying that a large/small amount of snow will fall]
We got 12 inches of 'snow'. [=we had a snowstorm that left 12 inches of snow on the ground]
They'd been promised a big return on their investments, but all they got was a 'snow job'.
(..) About time, don't you think? Thank you. Just shut up. Stop it, Ron. You're making it snow. Tell me how I broke up with Lavender again. Well, she came to visit you in the hospital. And you talked. (..)2009 Harry Potter and the Half-Blood Prince