# vac vs VD

> English confusable word pair

## The two words

### vac
*noun · IPA /væk/ · frequency rank #31,026*
Clipping of vacation (“extended period of time away from work or school”).

### VD
*noun · frequency rank #41,942*
The design diving speed of an aircraft; the highest speed which the aircraft is planned to reach during flight testing. Always higher than VNE (the speed that must not be exceeded in service).

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