ASSN stands for association and it is often used as an abbreviation in organizations' names such as professional, trade or social groups. Synonyms for this term include club, society, group, guild, league, order, union, alliance, consortium, federation, coalition, confederation, partnership, organization, body and network. These words all describe groups of people who come together for a common purpose, whether it be for professional development, social interaction or advocacy. With so many synonyms available, it's important to choose the right one that accurately reflects the mission and values of the group.