This happens because you're creating categories of crime that are disconnected from specific criminal acts (murder, theft etc) and rather things that are simply ongoing human conditions...
I.e. poss...
They're not the same. Possessing a plant in no way affects anyone else's property.
Being on the wrong side of a property border does. And certainly drawing resources from a welfare state does.
Being on the wrong side of a property border does. And certainly drawing resources from a welfare state does.