Are winning trades immediately available for trade?

I know that in a standard stock cash account, you can not immediately use your profits for trade (in other words, you can not buy a stock in the morning, sell it in the afternoon, and then use that same money to buy more stock right away. The only exception to this rule is if: 1. You bought the stock three days prior before closing it. 2. You have a stock-MARGIN account 3. You have a stock Day-Trading account.) Does the Forex work the same way? Can you immediately use your winning profits to trade with? Thanks.

In short yes.

you can even use your account equity for trades.

that means if you have an open trade and profits from that trade, ie price moved in favour to you so if you have closed the trade now you would have profits then you can use this "profits" while trade is still open...

In fact, some of the best trades I've seen build a house of cards using that equity. Enter your profit and the margin call becomes a positive stop, Margin call's are guaranteed during fundamentals on most brokers.