Everything is a concept, or a collection of ideas. There are physical concepts, like a tree. You can see it; you can touch it; you can smell the wood. All those perceptions are part of the concept of a tree. There are also non-physical concepts like money on a credit card. The money is not physically in the credit card, but that does not mean it is not real. Whether something is physical or non-physical does not actually matter in philosophy. The examples just show that all concepts can exist in their own way.
My philosophy is that all concepts are based on two things: logic and chaos. Logic represents everything you know and understand about a concept. Chaos represents all the unknown and random parts of a concept. For example if you roll a die, you know it will fall on one of the six sides, however you do not know which one.
For a more in depth way of thinking about it: Pick something, it can be anything. Then make a list of everything you know about it. Afterwards make a list of everything you do not know about it. What you do not know might include: how it works, what it is made of and where did it originate. If it is like a die you might also not know what it will do. Make sure to keep everything relevant. After you have completed your lists, all of the properties you wrote down make up what that thing means to you. It should work for any object or idea.
To sum everything up, everything is a concept and concepts are made out of logic and chaos. I challenge you to find a more fundamental way of describing everything.
