In Italy (and in most countries I've visited), waste sorting typically involves two distinct categories for compost and residual waste.
Question: Why is compost disposed of in a separate collection rather than with residual waste? Are there any environmental differences if it decomposes together with dry waste versus separately? Is it a matter of disposal efficiency, or is it simply another administrative complexity?
Rules for the "compost waste" doesn't apply for making the compost that you use as a fertilizer. Maybe that's why we call it "wet". It's basically anything that is biodegradable. But not everything that is biodegradable is ok for fertilizing...