Earning Assets create value over time.
Stocks are Earning Assets, as they are valued based on earnings.
Earnings are the sum of cash flows and accruals. Earnings are retained and reinvested by companies and compounds results to create value over time.
When you invest (take ownership) in the equity of a company, you own a piece of value creation from cash flow.
Do your investments create earnings from cash flows? Are they Earning Assets?