# Ontology
|  | In metaphysics, **Ontology** is the philosophical study of being. It investigates what types of entities exist, how they are grouped into categories, and how they are related to one another on the most fundamental level. Ontologists often try to determine what the categories or highest kinds are and how they form a system of categories that encompasses the classification of all entities. Commonly proposed categories include substances, properties, relations, states of affairs, and events. These categories are characterized by fundamental ontological concepts, including particularity and universality, abstractness and concreteness, or possibility and necessity. Of special interest is the concept of ontological dependence, which determines whether the entities of a category exist on the most fundamental level. Disagreements within ontology are often about whether entities belonging to a certain category exist and, if so, how they are related to other entities. |
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| | wikipedia:: [Ontology](https://en.wikipedia.org/wiki/Ontology) |
[[Existence|Being]], [[Haecceity]], [[Facticity]], [[is-a]], [[Identity (philosophy)]]
## [[Metaphysics]]
## Concepts
- [[Identity (philosophy)]]
- [[Subject-object distinction|Object]]
- [[Object-oriented Ontology]]
- [[Objectivity|Subject]]
- [[Theory of categories|Category]]
- formal, convention
- type
- [[Type–token Distinction]]
- [[Use–mention distinction]]
- [[Class (philosophy)|Class]]
- [[Particular]] vs [[Universal (metaphysics)|Universal]]
- [[Abstract]] vs [[Tangible|Concrete]]
- Tangible
- [[Property (philosophy)]]
- attribute
- [[Relation (philosophy)]]
- association, similarity, group
- Nearness
- [[Map–territory relation]]
- [[The simulacrum is never that which conceals the truth—it is the truth which conceals that there is none. The simulacrum is true.|Simulacrum]]
- [[Essentialism]] vs parameters
- [[Existence|Being]]
- [[Facticity]]
- [[Haecceity]]
- [[is-a]] vs [[has-a]]
- Contingency? as parametric contra being. And situated and understood via a particular metaphysics of time, with implications in methods toward existential authenticity plus relational authenticity via exactly those conceptual clarifications
- [[Being and Time]]
- [[Being and Nothingness]]
- [[Idealism]] vs [[Philosohpical Realism]]
## Consilience/Multiple Routes toward transcendental aesthetic/quietism
- [[Philosophy of mind]]
- [[Understanding]]
- [[Perception]]
- [[Codex/Academia/Humanities, Arts, & Social Sciences/Linguistics/Linguistics|Linguistic]]
- [[Sense and Reference]]
- [[Transcendental idealism|Transcendental aesthetic]]
- [[Ludwig Wittgenstein|Wittgenstein]]
- [[Semantic externalism]]
- [[Private language argument|Beetle in a box]]
- [[Quantum superposition]]
- [[Quietism]]
- [[Philosophical Counseling|Philosophical Therapy]]
- [[Spacetime]]
- [[Immanuel Kant|Kant]]
- [[Transcendental idealism|Transcendental aesthetic]]
- [[Time (concept)]]
## Inbox
- [[Formalism (philosophy)]]
- Nominalism
- [[Rapport qua existential authenticity]]