Substance

A Substance is a type of object which other objects can be made of. Substances include:

• Cloth-type substances.
• Alloy-type substances.
• Paper-type substances.
• Inorganic-type substances.
• Wood-type substances.
• Metal-type substances.
• Bone-type substances.
• Stone-type substances.
• Gem-type substances.
• Organic-type substances.
• Glass-type substances