1. A formal organization of people or groups of people Noun
2. The act of consorting with or joining with others Noun
3. The state of being connected together as in memory or imagination Noun
4. The process of bringing ideas or events together in memory or imagination Noun
5. A social or business relationship Noun
6. A relation resulting from interaction or dependence Noun
7. (chemistry) any process of combination (especially in solution) that depends on relatively weak chemical bonding Noun
8. (ecology) a group of organisms (plants and animals) that live together in a certain geographical region and constitute a community with a few dominant species Noun