What are the five forms of financing, and how is each used within sport? Please

What are the five forms of financing, and how is each used within sport?
Please post a substantial response to the above question and reply to the post below.
The five forms of financing are as follows.
1- Debt- This is where borrowing money that must be repaid over a period of time with interest. An example of this is that is can bused to finance a new stadium. 
2- Equity- The owners can exhange a share or portion of their ownership for money.  Example- Used to raise capital after purchasing a sports organization.
3- Retained Earnings- The portion of earnings that a firm saves in order to fund operations of acquireassets. Often used by publicly traded companies, when they choose to reinvest earnings rather than pay them to shareholders as dividends.
Example- They are often used to finance the acquisition of players, improce operations, or make other investments.
4-Governement Funding- Funds provided by federal, state, or municipal sources and may include land use, tax abatements, direct stadium financing, state and municipal appropriations, and infrastructure improvements.
5- Gifts- Charitable donations, either cash or in-kind, made to an organization.  Primary source of peration and investing income for major collegiate sports programs. Can help provide money for athletic scholarships and to offset losses in institutional financing.