Works are symbols (abstractions) for other abstractions (e.g., Peace, War) and for tangibles, e.g. existing poor and rich. As symbols for tangibles, some works can be least abstract, i.e., the symbol for the poor now in your wallet, more abstract, i.e., the symbol for the rich located in your country. A symbol for the poor discussed in a book on the history of its use. In all of the above examples, the work "poor" is a symbol representing a tangible called "money".