# UHD vs USO

> English confusable word pair

## The two words

### UHD
*noun · frequency rank #49,116*
Initialism of ultra-high definition (“3840×2160 (4K), 7680×4320 (8K), 15360 × 8640 (16K)”).

### USO
*noun · frequency rank #35,573*
Unidentified submerged object or unidentified submarine object.

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