@675frcc45 the names are pretty arbitrary, just attributed to the property that one of each attracts, and two the same repel. And they repel (or attract) due to the forces acting on them which are governed by an equation relating their charge (positive or negative and how much) and how far apart they are.
As Lidunka says, the names ‘negative’ and ‘positive’ are just words we’ve made up. What’s important is that they’re opposite in electric charge to each other, and in electromagnetism, opposites attract!
You might wonder why electrons can’t be positive – turns out they can, but we call them ‘positrons’ instead. They’re much rarer and don’t exist commonly in nature. Likewise, negative protons could exist too. I’m not sure what we call them though – negatons, maybe!?