An idea you will get every time you learn economics is the idea of 4 factors of production. In one factor of the production process you will get outputs , but for outputs you will need many inputs like supplies , factory , people to work in the factories and etc , the idea of these is that all of these can be classified to the 4 factors of production which are Land,labor,Capital and entrepreneurship. These are all the requirements of a business. 

Land

Like land , people work in land but the context of land in economics is different as land could mean water , oxygen , energy or soil , in some ways we can take the first context as natural resources.

Labour

How can someone make or produce many things? They need people , for example if we have a farm we need people to plant the seeds , then only the crops grow. This is called labor. Labor is not forceful in economics , labor is like a job in economics unlike the real definition of labor 

Capital 

Capital is like tools to produce things , for example I have a business selling toys. To make those toys I need plastic , metal and more like machines. These are called capital where you use things to make the items you produce.

Entrepreneurship

repreneurshipEntrepreneurship is when we put everything together to produce things , using land as natural contribution for our production , using labor as people who work for the production , capital as the modern equipments for our production