This is a little bit confusing for me. Is money not the same thing as currency again? Would you kindly explain this? On bitcoin, my opinion is that it is an asset and not physical money and that is why people buy and later resell for higher gains.
For simplicity purposes, I'm going to say that money is considered anything that is legal tender by countries...
Money includes fiat cash (issued by the government) but it also includes items such as gold and silver (some gold collections like the britannias are accepted by the UK government as legal tender for example). There's the potential argument that gold and silver are money as most central banks will readily convert it to cash in its face value (or you'll find someone who can fairly easily). But gold is considered to not be splittable which is very much the case (if 0you heat gold up it can lose some purity - you're also paying a high transaction fee).
Currencies on the other than are things that it's possible to break up into smaller pieces easily - like fiat money and Cryptocurrencies.
Fiat coins often have inflation but most things outside of the fiat world are deflationary by nature in the outer money circle.