weathering is a mean of deposition
deposition is accretion. deposition_process is not physical_state_change_event. deposition_process is physical_state_change_event. snowing is precipitation_process. deposition is not accretion. snowing is not precipitation_process. atmospheric_pressure_cvd is chemical_vapor_deposition. phosphate_weathering is erosion. phosphate_weathering is not erosion. atmospheric_pressure_cvd is not chemical_vapor_deposition.