# GFK vs gz

> German confusable word pair

## The two words

### GFK
*abbrev · IPA [ɡeːʔɛfˈkaː] · frequency rank #19,937*
Glasfaserverstärkter Kunststoff; Glasfaserkunststoff; Fiberglas

### gz
*abbrev · IPA [ɡeˈt͡sɛt] · frequency rank #43,939*
Glückwunsch, Gratulation

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