Gold does not have a clearly total supply like Bitcoin.
It is easily portable like Bitcoin.
You need to have vaults to store gold bars.
You can not send gold from any wallet you control fully. You have to rely on accounts in banks, vaults etc to store or send your gold.
Bitcoin is light, portable, controllable with your private keys and its total supply is unchangeable. 21M Bitcoin will be mined till 2140. No more Bitcoin to mine after 2140.
You're talking about the physical rather than gold and bitcoin.
I see op is not talking about the physical nature of gold and bitcoin, but more inclined to the market concept embraced by bitcoin and gold.
the concept of the market, if gold goes down if the asset is not sold, then there is no loss and can be sold when the price returns to normal, as well as the concept of bitcoin.