Apartment house and Co-op

Apartment house noun - A building that is divided into apartments.

Co-op and apartment house are semantically related. In some cases you can use "Co-op" instead a noun phrase "Apartment house".

Co-op noun - A jointly owned commercial enterprise (usually organized by farmers or consumers) that produces and distributes goods and services and is run for the benefit of its owners.

Apartment house and co-op are semantically related. You can use "Apartment house" instead a noun phrase "Co-op".