hi john, i know u did help me to explain this two differences and you told me they are not same.
However, so far in the question, when they either mention either equity risk premium or market risk premium, they get any of this premium and multiply with beta after that add the risk free rate to get the cost of equity.
i have understood the differences between those two but to get the cost of equity, either both equity risk premium or market risk premium can be used to get cost of equity ?