affiliation
noun /əˌfɪliˈeɪʃn/
  /əˌfɪliˈeɪʃn/
[uncountable, countable] (formal)- a person’s connection with a political party, religion, etc.
- He was arrested because of his political affiliation.
 
Extra Examples- voters who have no party affiliations
 - the diverse religious affiliations of Ghanaian Americans
 
 - one group or organization’s official connection with another
- Trade unions have a long history of affiliation to the Labour Party.
 - the institute's affiliation with the university
 
 
Word Originlate 18th cent.: from French, from medieval Latin affiliatio(n-), from the verb affiliare, from ad- ‘towards’ + filius ‘son’.