pollution (suomeksi)

saastuminen (s: the contamination of the environment by harmful substances / saastuminen / state)
saastuttaminen (s: the contamination of the environment by harmful substances / saastuminensaastuttaminen / act)
saaste (s: something that pollutes; pollutant)
itsesaastutus (s: medicine, obsolete: emission of semen at other times than in sexual intercourse / itsesaastutus / masturbation)