gathering - meeting - congregation - conference - convention - council - session - convocation - rally - symposium - forum - conclave - get-together - aggregation - assemblage - muster - congress - caucus - huddle - meetup - powwow - synod - colloquium - seminar - workshop - summit - panel - roundtable
Assembly refers to a group of people gathered together for a common purpose, such as a formal meeting, legislative session, or a congregation for a specific event. It can also refer to the process of putting together components in manufacturing or computer programming.