Supplier payment and expense payment invoices are same or not?

the payment invoices of supplier and expense are same or not?

There is no such thing in Manager as payment invoices or expense payment invoices, so it is not clear what you are asking.

There are Purchase Invoices, Expense Claims and Payments which are three different transactions.

Can you ask your question again, using the same terminology as in Manager

If you are asking is a payment to a supplier and a payment to an Expense Claim Payer made using the same transaction, Payment, then yes