Accounting is the process of recording transactions related to increases or decreases in money, items, or expenses. Accounts that increase or receive money or items are debited, while accounts that decrease or give money or items are credited. There are several types of accounts including money accounts like cash, petty cash, and bank accounts; trading items like stock, goods, and materials; non-trading items that are named directly; expenses that are named directly; and owner's accounts like capital and drawings. The rules for different types of accounts determine whether they are debited or credited for increases and decreases.