What's the noun for frostings? Here's the word you're looking for.
frost
A cover of minuteicecrystals on objects that are exposed to the air. Frost is formed by the same process as dew, except that the temperature of the frosted object is below freezing.
The cold weather that causes these ice crystals to form.
(figuratively) Coldness or insensibility; severity or rigidity of character.
“We had set out reluctantly on a Friday evening at the end of a hard working week through a wintry countryside glittering with frost and wreathed in freezing mist.”
“Sow seeds indoors about six weeks before the average date of the last spring frost in your area.”
“The Englishwomen never appeared to exchange any words yesterday, but the frost between them made the NIA seem closer to Turin than the Bullring.”
“Now you will make your various frostings and icings, or prepare your melted chocolate for drizzling, or dust with powdered sugar to decorate your cookies as directed.”
“Caesar salad dressing, the Italian dessert tiramisu, homemade ice cream, chocolate mousse, eggnog, cookie dough, and frostings can contain raw eggs.”
“I liked to look in the baker's store window and examine the array of different frostings on display.”