the fundamental nature or categories of things that exist

ontology

noun|/ɒnˈtɒl.ə.dʒi/

The nature of being or categories of existence

Examples

In a meeting

We need to establish a clear ontology for our database—how we categorize and relate different entities.

Over coffee

They debated the ontology of digital art—is it truly 'real' art?

Why this word

metaphysics

Metaphysics covers all abstract philosophy; ontology specifically studies the nature of being and existence

philosophy

Philosophy is the broad field; ontology is the specific branch concerning what exists

theory

Theory is any systematic explanation; ontology specifically addresses fundamental categories of reality

Usage tip

Use when discussing fundamental categorization or the nature of existence. Common in data architecture and philosophical discussions.

Etymology

Greek 'ont-' (being) + 'logia' (study)

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