Gold is another store of value, but not that unstable. It reached 2000$ recently and was above 1000$ for many years. Those who invested in gold back in 1900 would have made a great choice since it costed only 20$ back then if I'm not wrong. (Although dollar was way more strong than now)
Bitcoin can lose 500$ within one night. Gold can't. Why that?
if talking between gold and bitcoin is different. even in terms of functions it is different, because we know that gold is suitable for long-term savings and the increase is not as drastic as bitcoin.
Unlike Bitcoin, the rise and fall are extraordinary. even overnight it can go up 50% but it can go down 50% because bitcoin trading is very large, and buying and selling is very high every second.