Gross and Net profit
Gross profit is the total revenue minus the cost of goods.
Net profit is the gross profit minus operating expenses and all other expenses.
The meaning of net assets refers to the total value of a company's assets after their total debt has been deducted. A company's assets can include the building/property, land and equipment.
Leasehold and Freehold
Freehold: If you own the freehold, it means that you own the building and the land it stands on outright.
Leasehold: Leasehold means that you have a lease from the freeholder to use the home for a number of years.