positive balance vs credit balance

positive balance and credit balance both are nouns.

Word	Noun	Adjective	Verb	Adverb
positive balance	Yes	No	No	No
credit balance	Yes	No	No	No

As nouns, positive balance and credit balance are synonyms defined as:

positive balance and credit balance: an account balance in which credits exceed debits, and the bank owes money to the customer.

positive balance (noun)	credit balance (noun)
an account balance in which credits exceed debits, and the bank owes money to the customer.	an account balance in which credits exceed debits, and the bank owes money to the customer.