About economics, management and marketing
Economics - branch of social science that deals with the production and distribution and consumption of goods and services and their management
Finance - is the branch of economics that studies the management of money and other assets
Management - is the organizational process that includes strategic planning, setting; objectives, managing resources, deploying the human and financial assets needed to achieve objectives, and measuring results. Management also includes recording and storing facts and information for later use or for others within the organization. Management functions are not limited to managers and supervisors. Every member of the organization has some management and reporting functions as part of their job.
Marketing - means to make a communication about a product or service a purpose of which is to encourage recipients of the communication to purchase or use the product or service.