Fiat and cryptocurrency are the same but people in society differentiate them and value fiat because its adopted by the government far back, and since the existence of the world and also a specific country, so from my research I find out that government just disliked cryptocurrency for nothing,
You got it all wrong... your research is bad! Fiat currencies are not adopted, they are created and governed by governments! There are different cryptocurrencies, they are created on blockchain technology, and they are regulated by math! Try to run another research, maybe you need to change your approach!
So differentiating fiat from bitcoin is valueless because irrespective the importance and massive adoption of fiat currency from its existence before cryptocurrency, it's obvious that fiat is money and bitcoin is money, their functions and contribution in society never depart from each other, so bitcoin now is the shortest way of transactions across the world without much process or procedures, using bitcoin everything buyable is easier to purchase without stress, so from my perspective I prefer bitcoin than fiat currency due to fast transactions process across another country, and nothing fiat can purchase bitcoin can't purchase, so no difference between both because all are currency.
These lines are confusing... I see the point, but even here you are wrong about some things. Bitcoin and alts have value, and you can use them to buy many things... sometimes you will need to exchange them for some fiat first, pay some fees... but the bottom line is that you can spend your crypto on anything you want! And now it's a lot easier to that than 5 years ago, adoption is ongoing and will not end anytime soon in my opinion!
It's not my line, but I agree with "crypto is just a next generation of money"... There were things before gold and silver coins, coins then evolved into banknotes around 1661 AD. The first credit card was introduced in 1946. And after 2010 we have crypto!