weathering means breaking down rocks from a larger whole into smaller pieces by weather / mechanical means
bouldering is rock_climbing. weathering is becoming. windy is adjective_wind_noun. snowing is atypical_thing. snow is weather. phosphate_weathering is erosion. stand_underneath_when is raining_or_snowing. weathering is physical_event. snowing is precipitation_process. degree_of_snowiness is weather_attribute.