Is GDP and treasury money the same concept?

Of course not. The so-called national treasury refers to the government's acquisition through taxation. The government has a budget, and then uses the tax revenue of the previous year to implement the budget. In ancient times, there was no credit and national debt to finance, so there was only so much money and tax to trade. But now the government can raise funds through various channels for investment and transfer payments. So the concept of national treasury is useless. GDP refers to the income of all people in a country, including government taxes and the change in your pocket now.