A palindrome is a word or phrase that reads the same backward as forward (like "racecar" or "level").
Here's why it's tricky:
* "Hanging" isn't a palindrome.
* "Wall covering" is a phrase, not a single word.
You could try to find a palindrome that *relates* to the activity, like "level" (referencing making the wall even), but it wouldn't be a perfect match.