co·op·er·a·tion 
/koʊˌɑ:pəˈreɪʃən/ noun
/koʊˌɑ:pəˈreɪʃən/ noun [noncount] 1 : a situation in which people work together to do something
▪ The report cited a lack of cooperation between state and local officials. ▪ The fair was organized in cooperation with local businesses. = The fair was organized with the cooperation of local businesses. 2 : the actions of someone who is being helpful by doing what is wanted or asked for
▪ Thank you for your cooperation. ▪ We are asking for your full cooperation.
▪ The report cited a lack of cooperation between state and local officials. ▪ The fair was organized in cooperation with local businesses. = The fair was organized with the cooperation of local businesses.
▪ Thank you for your cooperation. ▪ We are asking for your full cooperation.
