Don't worry, they are pretty interchangeable, depending upon context. The dictionary definitions show both can be used for the same meaning, say for equal right

Don't worry, they are pretty interchangeable, depending upon context. The dictionary definitions show both can be used for the same meaning, say for equal rights and for actual equal carving out of resources and means. Or something specific in the case of finance or law. And the woke crowd evidently have their own stricter definitions of both. I'd avoid using either in any polemic for a better world, and stick to the original words of the communist manifesto, which have not been bettered: from each according to their ability, to each according to their need!