What is the difference between non excludable and non rival?

Non-excludable goods are those that individuals cannot be effectively excluded from using, meaning that once they are provided, it is difficult to prevent anyone from accessing them. Non-rival goods, on the other hand, are those where one person's use does not diminish the availability of the good for others; multiple people can use it simultaneously without affecting each other's consumption. An example of a non-excludable good is public broadcasting, while a non-rival good could be a digital file that anyone can access without reducing its availability to others.