Idiosyncratic risk vs. systematic risk
Idiosyncratic risk is related to the specific investment you've chosen, whether that's a problem related to the industry, the business, or the asset class. On the other hand, systematic risk applies to virtually every investment available.
Systematic risks are both unpredictable and unavoidable, and sometimes they just happen. For example, the Great Recession had far-reaching consequences that affected lots of different assets and asset classes. The COVID-19 pandemic did the same, although it was a very different look.