cooperation [cooperations](act of cooperating or being cooperative) noun [UK: kəʊ.ˌɒ.pə.ˈreɪʃ.n̩] [US: koʊ.ˌɒ.pə.ˈreɪʃ.n̩]I need your cooperation. = Ho bisogno della tua cooperazione.
partnership [partnerships](association of two or more people to conduct a business) noun [UK: ˈpɑːt.nə.ʃɪp] [US: ˈpɑːrt.nər.ˌʃɪp]