Shut-ins and Shut-in

Shut-in and shut-ins are semantically related. in sick person topic. In some cases you can use "Shut-in" instead a noun phrase "Shut-ins", when it comes to topics like person being treated for medical problem.

Shut-in noun - Someone who is incapacitated by a chronic illness or injury.

Shut-ins and shut-in are semantically related. Sometimes you can replace phrase "Shut-ins" with "Shut-in", this phrases are similar.