weathering / mechanical weathering means breaking down rocks / surface materials from a larger whole into smaller pieces by weather / mechanical means
weathering is becoming. snowing is atypical_thing. snow is weather. phosphate_weathering is erosion. weathervane is mechanical_device. weathering is physical_event. weather_vane is mechanical_device. snowing is precipitation_process. stand_underneath_when is raining_or_snowing. degree_of_snowiness is weather_attribute.