Accounting
Asset
An asset is anything of economic value you own: cash, investments, real estate, vehicles or loans made to others.
In personal finance it's useful to distinguish productive assets that generate income or appreciate (funds, stocks, rental property) from use assets that meet a need but don't produce income (your home, your car).
Valuation should be conservative and consistent: using the same method every time matters more than getting the exact value right, because what matters is the trend of the series.