These thirteen English words share a hidden property:
GULLS, FUSION, BOMB, MILLS, DON, FUR, CHAIN, MOCHA, HYMN, WOLFS, MUNCH, PINY, WITS
The list is not complete; there are other words with the same property, but most English words don't fit the pattern. Can you name two other words of at least three letters with the same property?
Note: The solution to this puzzle is not related to that solution. The only similarity is that they both contain a group of thirteen words.