Don't you always have to start with the question of "stable relative to what"? Relative to the price of gold? Relative to the price of Bitcoin? Of USD? Of a

Don't you always have to start with the question of "stable relative to what"? Relative to the price of gold? Relative to the price of Bitcoin? Of USD? Of a loaf of bread? Of a unit of energy? Of a plot of land? (Where?) Of a "basket of goods and services"? (What goods? What services? How much of each? In what location?)