Co-op and Walk-up

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.

Walk-up and co-op are semantically related in apartment topic. In some cases you can use "Walk-up" instead a noun phrase "Co-op".

Walk-up noun - An apartment building without an elevator.

Co-op and walk-up are semantically related in apartment topic. Sometimes you can use "Co-op" instead a noun phrase "Walk-up".