Mold is the American spelling for all senses of the word meaning, among other things, Mould is the British spelling. American English has no mould, and British English has no mold.
A mold or mould is a hollowed-out block that is filled with a liquid or pliable material like plastic, glass, metal, or ceramic raw materials.The liquid hardens or sets inside the mold, adopting its shape.
In the food and beverage industry. Mold used for cooking whether it is food or dessert. Such as chocolate, bringing chocolate to melt then pour into the molds and leave it to cool, about 3 minutes then get the chocolate off the mold. the chocolate will take the shape of the mold