Good Day medium, there is something I will want us to be aware of since bitcoin is a life-changing investment some people are taking it as property, I say this because I overhear someone making a call and saying he has 2BTC and that's is his property.
Now that bitcoin is more valuable in most countries, that shouldn't be a property it should be an investment, those who see bitcoin as property should learn more or read more about bitcoin and how it works.
To me, bitcoin is an investment and also a treasure, I don't know if am wrong or right.
But if someone may ask you, what do you call BITCOIN?
You have it wrong OP, it is not an investment. Satoshi Nakamoto developed it to be a payment option... not an investment option. Go read the White Paper on Bitcoin and see what Satoshi calls it.
Like "cash" or fiat currencies... people can trade with it (Forex markets) but it is primarily supposed to be a currency. Anything you own.. can be your property... so it does not have to be a house or a piece of land.

I would say "asset" is the best word. Dollar could be an asset, stocks could be assets, gold, oil, wheat, house, building, car, anything could be an asset as long as you are investing into it and have a reason for putting in money and how you plan to make a profit from it. At the same time, I believe that you shouldn't really invest into cars of course, not a viable option in many nations but at the end of the day crypto is an asset just like all the others.
It means that you could invest, and use it if you want to, but if you plan on buying and making a profit from it then you are doing the right thing and you should be profiting from it as well.