I've seen the phrase "occasional table" twice today, and it was obvious what it meant from context -- an end table or a side table. But I don't remember seeing the phrase before. And my first thought on looking at it is "an object which is occasionally a table", and therefore sometimes something else. Like right now it's a table, but sometimes it's an ottoman, or a chessboard, or a chair, or perhaps a duvet. Transformer furniture!
I know that's not what it means, but in a better world, perhaps it would be.