Property rights are rules that say what people are allowed to do with stuff—like things they own or control.
These rules have to be clear so everyone knows what’s okay and what’s not. Without rules, society can’t work properly.
Some things are allowed, some aren’t:
You can compete with someone by making better toys.
You cannot hurt someone by shooting them.
You can defend yourself if someone breaks into your house.
You cannot break certain rules about selling things for too cheap.
Who gets helped and who gets hurt depends on how these rules are made.
Because of that, a main job of the government is to make the rules about property and keep them fair, so people can live and work together without constant fighting.
Basically: clear rules about stuff = society works, and the government makes sure the rules are followed.