quorum (n.)
- assembly
- assignation
- ball
- brawl
- caucus
- colloquium
- commission
- committee
- conclave
- concourse
- congregation
- congress
- conventicle
- convention
- convocation
- council
- dance
- date
- diet
- eisteddfod
- festivity
- fete
- forum
- gathering
- housewarming
- levee
- meet
- meeting
- panel
- party
- plenum
- prom
- rally
- reception
- rendezvous
- seance
- session
- shindig
- sit-in
- sitting
- soiree
- symposium
- synod
- turnout