There are many types of icing and frosting, the amounts of sugar for each vary. Please see the links below for a wide variety of icing recipes, many of them simple to do.
Icing sugar is the basis of royal icing. Otherwise you just have an egg white and lemon juice. Other types of sugar, such as raw sugar, brown sugar or white granulated sugar, will not combine with...
Confectioner's sugar is icing sugar mixture (pure icing sugar with a small amount (about 3%) of starch added as an anti-caking agent). Pure icing sugar is very fine powdered refined sugar with no...