affiliation [affiliations](A club, society or umbrella organisation so formed, especially a trade union) noun [UK: ə.ˌfɪ.li.ˈeɪʃ.n̩] [US: ə.ˌfɪ.li.ˈeɪʃ.n̩]
association [associations](group of persons associated for a common purpose) noun [UK: ə.ˌsəʊ.ʃi.ˈeɪʃ.n̩] [US: əˌso.ʊ.ʃi.ˈeɪʃ.n̩]