The French have the clever word moue, which is what English speakers, much less elegantly, call a pout.
Clever? Well, saying it makes you do it. I think that's very clever.
Moue is quite similar in pronunciation to our English word moo, but the French moue is more associated with allure or disgust than cows. (There may be some great philosophical truth lurking beneath that fact, but quite frankly I don't want to think about it.)
Anyway, mousse is an English word with some of the allure, I believe, of moue.
Mousse comes in various forms which you might eat or might spread on your hair.
Best to make sure which sort it is before use.
Auberge Saint-Roche bettarave au vinaigre de framboise. Photo by JPS68
Word To Use Today: mousse. This is a French word at root, too. It means froth.