i Register
In some senses, institution is marked as informal. Watch for register when choosing this word.
noun
A custom or practice of a society or community.
The institution of marriage is present in many cultures but its details vary widely across them.
A long-established organization or type of organization, particularly one involved with education, public service, or charity work.
The University of the South Pacific is the only internationally accredited institution of higher education in Oceania.
[…] these professors of Little Red Schoolhouse-education did not themselves remain in the isolated and handicapped little institution they glorify.
The building or buildings which house such an organization.
He's been in an institution since the crash.
A mental institution.
Any facility where people (especially those who are mentally or physically disabled or sick, or who are prisoners) are committed (confined), where their freedom to leave is restricted.