Common:
* Abbey (a religious community)
* Valley (a low area between hills)
* Turkey (a bird)
* Money (a medium of exchange)
* Honey (a sweet substance made by bees)
* Donkey (an animal)
* Sneeze (a sudden expulsion of air from the nose)
Less Common:
* Alley (a narrow passageway)
* Boney (having many bones)
* Coney (a rabbit)
* Drey (a bird's nest)
* Fley (to strip off the skin)
* Heydey (a time of greatest success)
* Joey (a young kangaroo)
* Spey (a river in Scotland)
* Whiskey (a type of alcoholic beverage)
Note: Some words like "smiley" and "goody" are adjectives, not nouns.
This list is not exhaustive, as there are many other nouns ending in "-ey" in specialized or archaic usage.