Money plays a major role in our experience and I find that very few people explore the idea of what it is. This question concerns Form.
Money is any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts in a particular country or socio-economic context, or is easily converted to such a form. - Money, Wikipedia
The above definition describes the function or behavior of Money but fails to identify if it is an item or a record, or a payment? As defined above, Cow could be Money. "That's right" you say; and it used to work that way. However, a liquidity index, the efficiency of moneys function, indicates Moneyness. That's why Cow is less in Moneyness than lightweight Government Notes.
OK fine, but what is Money? A store of Value? Cow (and Government) disintegrates over time. Gold does not. Getting closer?
Forms are the essences of various objects: they are that without which a thing would not be the kind of thing it is - Theory of Forms, Wikipedia
Confidence that we will live another day seems to be the essence, or the Form, of Money. Absent that, Money becomes nothing; Gold reverts to Metal. Maybe that's too far a leap, so atleast we could say that confidence in living another day is essential to Money. Store of Value includes said confidence. So then Value is essential to Money. OK, why is Value missing from the definition of Money? And, ...what is Value?
In any case, Gold seems as close to ideal Money as possible. It is literally elemental and practically indestructible, unlike Diamond, for example. Interestingly, highly addictive dope has significant potential of Moneyness. Moreso than Gold it seems.
Money is transferable value. Without those two, it's not Money. Right?
What is Money? As a construct of, for, and by the People, Money is complicated. I'd like to hear from you. What is it?