# d4 vs DSA

> English confusable word pair

## The two words

### d4
*noun · frequency rank #34,452*
A die with four sides.

### DSA
*noun · frequency rank #44,177*
Initialism of donor-specific antibody.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/d4-vs-dsa