Martin J. Whitman;Martin Shubik. The Aggressive Conservative Investor (Kindle Locations 217-218)
There exist market risk, investment risk, credit risk, failure-to-match-maturities risk, commodity risk, terrorism risk, and many more types of risk. The idea of general risk is not helpful in a safe and cheap analysis. When financial academics and sell-side analysts refer to risk they almost always mean only market risk and usually very short-run market risk.