Hives, for example, come in two types -- acute and chronic -- and are usually caused by your body releasing histamine in reaction to an allergy. Histamine is an organic compound in your body responsible for triggering the inflammatory process.
If you have a checking account, the bank prints your account number on the bottom of your checks as the second number after your routing number. You can have the same account number at different institutions, but not the same account and routing number.
Key Difference: The ABA Routing Number is a nine-digit number that is located on the check, it is also known as the Routing Transit Number (RTN). The Automated Clearing House (ACH) Routing Number is also a nine-digit number, similar to the ABA Routing Number.