This discussion clarifies whether common accounting terms like 'vendor', 'trade payable', 'inward', 'purchase', 'outward', 'sales', 'input', 'receivable', 'revenue', and 'income' can be used interchangeably. While some terms are closely related, they each have distinct technical meanings within accounting. For instance, a 'vendor' is the party providing goods or services, whereas 'trade payable' is the debt owed to them. Similarly, 'revenue' refers to gross earnings, while 'income' is the net profit after expenses.