The idea of gold tends to be better than the reality. It’s fine in small amounts, but the minute you want to start storing lots of value, you run into problems involving security, storage, transportation, etc. (Bitcoin is ingenious in these areas)

I’d also say money could be considered a good, if you take into account time preference.

What is a loan? It’s basically the amount you are willing to pay (in interest) to have money right now. You are obtaining the money now, in exchange for paying more of it back later.