cake

A cake is a sweet baked food.

Example: Natasha's mum baked her a cake for her birthday.

A cake is a food that is made into a flat, usually round, shape.

Example: At that time of year, we make small Japanese rice cakes called mochi.

A cake of soap or ice, is a hard piece of it.

Example: He took a cake of soap and started to wash.

If something is a piece of cake, it's very easy.

Example: Yesterday's test was a piece of cake. I got twenty out of twenty.

If something is caked, then it is coated with a layer of some material.

Example: His shoes are caked with mud.