categorization [categorizations](the process of sorting or arranging things into categories or classes) noun [UK: ˌkæ.tə.ɡə.rə.ˈzeɪ.ʃən] [US: ˌkæ.tə.ɡə.rə.ˈzeɪ.ʃən]
classification [classifications](act of forming into classes) noun [UK: ˌklæ.sɪ.fɪˈk.eɪʃ.n̩] [US: ˌklæ.sə.fəˈk.eɪʃ.n̩]