Pay up and Settle up

Pay up verb - To give what is owed for.

Settle up and pay up are semantically related in pay topic. In some cases you can use "Settle up" instead a verb "Pay up", when it comes to topics like pay off, pay back, make payment.

Pay up and settle up are semantically related in pay off topic. You can use "Pay up" instead a verb "Settle up", if it concerns topics such as pay back.