Checking the type from upper-ontology

Go through the objects in order and ask yourself: "Do I understand what is meant by this word/phrase?" Close your eyes and try to imagine this essence. If it doesn't work, or if more than one option comes to mind, then you need to rephrase, as we end up with an empty or too vague concept. It is better to refer to objects in a clear way. Sometimes you think of a word (phrase), but you mean not just one thing, but several things at once, and they are of different types --- this also happens, and it's normal, but only if you clearly realize it.

1. If you understand what is meant, ask yourself: "Can I touch it? Does it have extension in space and time? Am I interested in it specifically as having extension in space and time?" If yes, then it is a physical object. If not, move on to point 2.
2. If you have found that it is not a physical object, then you have some object of mental space: a tuple or a class.
3. A tuple is an ordered pair of elements + relationship between them. The elements can be of any type, the relationship can also be different! You and I have created many tuples when writing triplets and when creating composite objects.
4. A class is a group of objects gathered based on some characteristic. There may be only one object in a class (for example, physical), but it still is not equal to this object and does not become the object itself. We have more or less outlined the classes when setting categories and when talking about the meta-model.

All objects of attention that may be of interest to you in the world, when you talk about a specific simple object-related activity, can be attributed to one of these types and organized into structures using hierarchies if necessary.