what’s a qpr?

basically the title. for reference, i am asexual, but when people discuss qpr’s they confuse me. i have a few main questions

1. what makes a QPR different from a romantic relationship? 2 what makes a QPR different from having a best friend?
2. would all relationships involving ace people be considered a QPR? do both people need to be ace to be in a QPR? can one person be allo and still be in a QPR?