The difference between soot and black ash

First of all, the main colors of the two colors are the same, and the general colors of black ash and soot are gray. Secondly, the two give people different feelings. Black ash is mainly darker in color. Compared with ash, it gives people a heavy feeling, and ash is more beautiful. The third is that the color segmentation of the two is different. Gray is a series of colors between black and white. Black-gray belongs to dark gray in gray. Black gray is the main color of gray, and black is the auxiliary color. It's dark in gray. It looks black but not black. Smoke gray tends to be gray.