According to the French Environmental Code (article L541-1), waste is "any residue from a production process, transformation or use, any substance, material or product or more generally any type of discarded goods or property, or goods or property that the owner intends to discard". In other words, any element that is discarded is waste. This does not mean that this element cannot be used, as-is or after modification. Only waste qualified as final waste is truly unusable and must be stored in order to prevent environmental pollution.
Refuse pile. © Zigazou76 CC by