You could remove "tokens," and all the definition in contemporary finance can be applied.
a security is a tradable financial asset of any kind.
Securities are broadly categorized into:
debt securities (e.g., banknotes, bonds and debentures)
equity securities (e.g., common stocks)
derivatives (e.g., forwards, futures, options, and swaps).
Source:
WikipediaThe word "token" only shows that these financial assets are tokenized (or using blockchain technology).