The glottal stop (Knacklaut) is a brief closure of the vocal cords before vowels at word and syllable beginnings.
With glottal stop: be´achten, Ver´ein, The´ater
You hear a tiny pause/click before the vowel.
Smooth flow: Abenteuer, Feuerwehr, Neuigkeit
The syllables blend together without interruption.
80 words total, 20 per session. Wrong answers repeat. Progress saved locally.