Which thing qualify for money? I can't able to see that symbol on my PC's browser.
You missed one thing, the stable value is more important than anything on the featured list.
Its just the typical fast forward double arrow, but pointing up.
Guess your best place for a definition, or starters for one, as always, is wikipedia:
Money is any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts, such as taxes, in a particular country or socio-economic context. The main functions of money are distinguished as: a medium of exchange, a unit of account, a store of value and sometimes, a standard of deferred payment. Any item or verifiable record that fulfils these functions can be considered as money.
Now just because its money, doesn't mean its "good" money. This is where the keeping the value stuff comes in. Most of the money in circulation in the world, does not hold its value over time. Some lose it faster than others, but all of them lose, the inflation has been integrated into the economy, as per dogmas from the school of Chicago.
And then came Bitcoin...
"Stable" value is pointless when your only reference is money that is losing value anyway. The price of bitcoin may oscillate, but its a honest market price, and that is good. In the long run, not only its been quite stable, but it gains value (and of course the others lose on their own, as per design).
