DEF: To come together in a large group.
EX: Chinese immigrants tend to congregate into an area of a city and form a “Chinatown”.
For Religious Congregation, see link below.
Merriam-Webster Online Dictionary
congregate (verb)transitive verb
intransitive verb
to collect into a group or crowd - assemble to come together into a group, crowd, or assembly gather
providing or being group services or facilities designed especially for elderly persons requiring supportive services - congregate housing
