* Freedom: The state of being free from restrictions.
* Wisdom: The quality of having experience, knowledge, and good judgment.
* Kingdom: A country, state, or territory ruled by a king or queen.
* Christendom: The collective body of Christians.
* Randomness: The state of being without a pattern or plan.
* Wisedom: (archaic) Wisdom
* Holedom: (archaic) State of being in a hole.
* Wormdom: (archaic) The state of being a worm.
You can find a few more examples in dictionaries and in literature, but these are some of the most common abstract nouns ending in "-dom."