Exchange-Traded Funds (ETFs) and currency swaps are classified as financial instruments because they represent tradable assets or contracts that facilitate investment and risk management within the financial markets. ETFs are investment funds that are traded on stock exchanges, providing a means for investors to gain exposure to a diversified portfolio of assets. Currency swaps, on the other hand, are derivative contracts that allow entities to exchange cash flows in different currencies, serving a vital role in managing currency risk. In contrast, motor vehicles are tangible assets used primarily for transportation and do not fit within the definition of financial instruments, which primarily encompass contracts or claims that involve monetary value.