Suppose you have $10,000 in your account. XYZ is a $10 stock. The call price is $1 and the put price is $1 (based on put call parity).
In the covered write, you will buy 1,000 shares at $10 and then sell 10 calls for $1. Your net debit is $9,000.
With the naked put, you will sell 10 puts...