How to Classify Buying an NFT?

What is the correct classification for buying an NFT / ERC-721 TokenID?

Payment? Swap? Something else?

After classification do I need to do something else?

I do not see NFT deposits to my wallet…

The new ENS registrar takes ETH payments in exchange for one year of owning a domain (in the form of a ERC-721 TokenID). Does this have different tax implications than a normal NFT you would own forever?