Net Profit
The actual profit after working expenses not included in the calculation of gross profit have been paid.
Gross profit - Expenditure = Net profit

Retained Profit
The money that has been saved from sales a business has made after costs have been made.

Venture Capital
Money from investors that has been invested into promising companies at the point of start up. it is likely that this will be expected to be paid back.

Leasing
Part of the business is rented out and people pay the business for this rent.

Interest
Money gained from the bank for holding money in one of their accounts.

investment
Money gained from people that have faith in a business and give money in order to help it progress.