One source of philosophical controversy is that of universals.
To me, this seems to be an instance of the tooth pain issue.
Here is an account: 1
- Noun-ness was for ordinary objects (with obvious ontological status) in an earlier language game. E.g. rocks, tigers, hands.
- Our creativity with language / grammatical led us to nounify many other words, leading to ‘objects’ with unclear ontological status.