What is Sunyata (emptiness)?
Sunyata is a term in Buddhism that some people seem to struggle with. It's often translated as Emptiness. Sometimes it's translated as openness or voidness. Emptiness is sometimes misinterpreted as nihilism. It is the concept that nothing has inherent existence. Everything in the universe, including you, is dependent upon everything else. Everything is just a collection of things that are influencing other things.
If we really think about this, we know it’s true. Of course everything is interdependent. But, we tend to not live our lives with this understanding in mind. We tend to think of the world as separate from ourselves, and that can lead us to all kinds of trouble. Selfishness and greed come from not recognizing that we are simply part of a whole.
So much of the way we view the world is predicated on the labels and constructs that we put on everything. But these labels and constructs are empty. They don't have any real, intrinsic existence. That's why we say that all thought and matter are essentially empty.
We put labels on the world around us and then pretend that those labels are real.