I get the logic. It makes sense. Full node = validating node = (pruned node - data) In Ethereum, archive nodes store all historical data and intermediate states. In Bitcoin, this distinction isn’t usually made because full nodes don’t store intermediate states (just block data + UTXO set). You can have a non-validating note, but typically those are referred to as clients and not nodes because they don’t download the Blockchain and they just verify the headers, they rely on Full Nodes for proof.