# oncology vs ontology

> English confusable word pair

## The two words

### oncology
*noun · IPA /ɒŋˈkɒləd͡ʒi/ · frequency rank #18,146*
The branch of medicine concerned with tumors, including study of their development, diagnosis, treatment, and prevention.

### ontology
*noun · IPA /ɒnˈtɒləd͡ʒi/ · frequency rank #31,275*
The branch of metaphysics that addresses the nature or essential characteristics of being and of things that exist; the study of being qua being.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/oncology-vs-ontology