# V4 vs VD

> English confusable word pair

## The two words

### V4
*name · frequency rank #35,574*
The four Visegrád countries of Poland, Hungary, Slovakia and the Czech Republic, who have a European political alliance.

### 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/v4-vs-vd