MONEY
The uptight ones who probably got straight A's and followed all the rules as children only consider USD, EUR,JPY, GBP, and CHF as major currencies. Then they label AUD, NZD, and CAD, as 'commodity currencies.
These three letters are known as is04217 currency codes. By 1973, the international organization for stadardization [iso] established the three letters codes for currencies that we use today. other nickname for USD are green backs, bones ,benjis, benjamins, cheddar, paper ,loot, chese bread.
I think it's pretty obvious though, it deals with fiat and so that's what is being traded in forex.
But I don't understand it, if you are here in crypto then why are you promoting Forex trading? Yeah, of course, you need another source of income and what's not. But it's very hard to trade on Forex if you are a newbie.
It's better to just be a long term holder in crypto, not that complicated unlike Forex trading, just saying.