The difference between repayment of a bond's par value and a bank loan's principal is:

A bonds par value is paid when the bond matures and the loan principal is paid at the time the loan is made.

A bonds par value is paid at the time the bond is issued and the loan principal is paid at the time the loan is made.

A bonds par value is paid when the bond matures and the loan principal is paid with interest on an amortization schedule each period until the loan is paid in full.

A bonds pare value is paid with interest on an amortization schedule each period until the loan is paid in full and the loan principal is paid when the loan matures.