I was tweeting Lenovo for a context, but then dithered over which word to use. I wanted to say that one of the walls of our house does not have any picture, artifact, clock or anything that we do on the wall.
What that wall is?
We have kept one of our room's walls empty OR plain?
I wonder whether we can use 'empty' for something that is not a box-type of thing or any bench.
Another question, if the wall is not painted, is it 'plain' wall?