A difference between accounts payable and notes payable is:

Notes payable charge interest beginning when the note is issued while accounts payables often offer discounts for paying early.

Notes payable are only for inventory while accounts payables is for everything else purchased.

Accounts payable are always due within a year while notes payables are always due after $12$ months.

Accounts payables charge interest beginning when the note is issued while notes payable often offers discounts for paying early.