There are two kinds of capital: debt and equity. Both kinds are typically used by a company during its lifetime. Lenders have different objectives than investors and therefore look at different factors about a company when deciding whether or not to invest or make a loan.
Debt
Debt is money borrowed, which must be repaid at a set time period and generates income for the lender over that time period. Lending sources include not only banks, but also leasing companies, factoring companies and even individuals.