Currency is:
a) fungible
b) transportable
c) a reliable store of value
and
d) a generally accepted medium of exchange
Crypto only really meets 2 of those criteria.
You have defined money, “currency” is merely one tangible form of money
Regarding money - why does crypto not meet the standards you define?
Bitcoin / Crypto does all those things - particularly in countries where the government has utterly destroyed trust in “the currency”
e.) easily & cheaply divisible into units of economic utility