One of the terms used on this wiki.

When I use the term “ontology” I generally mean it in both of these senses:

1. as a philosophical/psychological term, meaning (roughly) the way that a person, or a group of people, conceive of the world in terms of what exists and the relationships between those things; this is partly addressed in Wikipedia as simply Ontology, though the academic part of this is less relevant.
2. as a term in computer science, meaning (roughly) a model of the entities, attributes and relationships that are or are intended to be represented and dealt with, using a particular piece of information technology; in Wikipedia this is called Ontology (computer science).

My term “ontological commoning” is intended to bridge the two senses.

My Types of thing in the world is also relevant and may be of interest. I have been writing about ontology since around or before 2009. This gives a lot about my own perspective on an upper, or top ontology.