How do you define a trade “war?” Is it simply affecting free trade in some shape or form? If so does devaluating your own currency or propping up industries vi

How do you define a trade “war?” Is it simply affecting free trade in some shape or form? If so does devaluating your own currency or propping up industries via government backed loans count? I’d argue that these initiatives affect trade and force other governments to enact their own measures. And of course, there are winners and losers.