The Picard ManeuverLearning on the job
DiddlydeeYou use money? I have cash on me very rarely.
Money is not strictly a physical item, it’s a verifiable record of tradable value. Cash is a physical representation of money usually in bills and coins, but the number in your bank account or credit card or PayPal or whatever is also money.
I’d say they’re the same thing colloquially for many, physical currency, though your point is correct.
I would definitely only use “cash”, “change”, or “bills” when referring to physical currency, but it will of course vary regionally.