Before attempting to learn the      art or science of bookkeeping it will be better to clarify some of the terms      that will have to be used again and again.
Transaction:
Any dealing between two      persons or things in a transaction. It may relate to purchase and sale of      goods, receipt and payment of cash and rendering of services by one party to      another. Transaction is of two kinds - cash transaction and credit      transaction. When cash is paid or received as a result of an exchange, the      transaction is said to be a cash transaction. When the payment or receipt of      cash is postponed for future date, this transaction is said to be credit      transaction.
Business:
It includes any activity      undertaken for the purpose of earning profit e.g., banking business, and      insurance business, a merchant business etc., etc.
Proprietor:
He is the owner of a business.      He invests capital in it, gives his time and attention to it. He is entitled      to receive the profit or bear loss arising out of it.
Drawings:
The cash or goods taken away      by the proprietor from the business for his personal use are called has      drawings.
Purchases:
Goods purchased are called      purchases. When the goods purchased for cash they are called cash purchases      but if they are purchased for which payment will have to be made at some      future date it is known as credit purchases.
Purchases Returns:
If goods purchased are found      defective or unsatisfactory, they are sometimes returned to the persons from      whom they were purchased or to suppliers are called purchases returns or      returns outwards.
Sales:
Goods sold are called sales.      When goods are sold for cash they are called cash sales, but when they are      sold without having received payment, they are credit sales.
Sales Returns:
If a person to whom goods have      been sold finds that they are defective or unsatisfactory and returns them,      are called sales returns or returns inwards.
Trade Discount:
It is rebate or allowance from      the scheduled price granted by the seller to the buyer. Trade discount is      usually granted in the following circumstances:
(a) When selling to a fellow trader.
(b) When the buyer is an old customer.
(c) When sales are made in bulk.
(d) As a custom of trade.
(a) When selling to a fellow trader.
(b) When the buyer is an old customer.
(c) When sales are made in bulk.
(d) As a custom of trade.
Cash Discount:
It is deduction or allowance      allowed by creditor to a debtor. If a person pays his debit before the due      date of payment the recipient may grant him an allowance for doing so. This      allowance is known as cash discount
Commission:
It is a form of remuneration      for services rendered by one person to another.
Expenditure:
An expenditure takes place      when assets or service is acquired.
Expense:
It means an expenditure whose      benefit is finished or enjoyed immediately such as salaries, rent etc.      Difference between expense and expenditure is that the benefit of the former      is consumed by the business in present whereas in latter case benefit will      be available for future activities of the business.
Account:
A summarized record of      transactions relating to person or thing is called an account.
Debtor (Account Receivable):
A person who owes money to      another is a debtor. When we say that we owe Mr. Rahim $200, we mean that we      have received from Mr. Rahim $200 which we have to repay. We stand as debtor      to Mr. Rahim for $200. It is also termed as accounts receivable.
Creditor (Accounts Payable):
A person who pays out      something or to whom money is owing is a creditor. It is also termed as      accounts payable.
Assets:
These are the things of value      possessed by a trader such as building, land, machinery, furniture, etc.
Liabilities:
They are the debt due by a      business to its proprietor and others.
Voucher:
Any written evidence in      support of a business transaction is called a voucher. When a ream of paper      is bought from a stationer, he gives a cash memo. The cash memo is a voucher      for the payment. When wages for the month are paid to the peon, receipt is      taken from him. The receipt serves as a voucher for the payment.
Goods (Merchandise):
It includes all merchandise      commodities which are purchased by the business for selling.
Stock (Inventory):
Goods or merchandise on hand,      that is goods remaining unsold, is called stock, stock in trade, or      inventory.
Equity:
A claim which can be enforced      against the assets of the firm is called equity. In other words, the rights      to properties are called equities. Equities are of two types: the right of      creditors and the right of owners. The equities of creditors represent debts      of the business and are called liabilities. The equities of the owner is      called capital, proprietorship or owner's equity.