Trade is when you swap something for something else. You could swap a ring for money or gold for diamonds, a car for money, a job for a house or a big pool for a pet and some money, a painting of Leonardo di Vinci for a gem and 5kg of gold.
Enterprise is like a world of jobs to make money, buy a house, a pool, a phone and heaps of rich stuff. You need a good idea, to get the resources you will need and then you can make it to sell.
You can be entrepreneurial like me. I am making a slingshot in the toys group. My teacher is Mr Bax and helped us to make a shop. Then we trade our slingshots for money like pts.