compost is solid waste in which organic material is broken down by microorganisms
rubbish is waste. compost is not decayed_organic_matter. mob_of_microorganisms is organic_matter. body_waste is organic_matter. compost is decayed_organic_matter. garden_compost is soil. garden_compost is compost. garbage is waste_material. compost is organic_matter. compost is not organic_matter.