any unit used in linear measurement, as the inch, foot, meter, etc. Origin of linear measure. 1885-1890. First recorded in 1885-90.
Realistically, you could put any icing you wanted on a carrot cake. The wonderful beauty of cooking is that you can make it to your liking. But, the traditional icing that most people put on carrot cake is cream cheese icing.
Icing is indeed different from frosting. For one, it is said to be thinner, and has a glossier appearance than the latter. Icing is said to be the term used in a more professional sense. It is like confectionerâs sugar combined with milk. Frosting is more of a thick, usually fluffy layer, like buttercream. Because of this, it is preferably used to cover the outer surface of the cake. The confusion sets in when the frosting is applied in such a way that it is purposely coated thinly on the cake.