con·fra·ter·ni·ty
noun/ˌkɒnfrəˈtɜːnəti/
/ˌkɑːnfrəˈtɜːrnəti/
(plural confraternities)
(formal)- a group of people who join together especially for a religious purpose or to help other people
（尤指宗教、慈善事业的）团体，协会 Word Originlate Middle English: from Old French confraternite, from medieval Latin confraternitas, from confrater, from con- ‘together with’ + frater ‘brother’.