credit balance vs positive balance

credit balance and positive balance both are nouns.

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

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

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

credit balance (noun)	positive 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.