This is the 48th most frequent Czech word.
během
"During" or "in the course of."
In this sentence, 'během' indicates a time period within which an event occurred.
Došlo ke změnám během schůze.
Changes happened during the meeting.
The word 'během' is used to denote the duration of an event described.
Během bouřky přestala fungovat elektřina.
The electricity stopped working during the storm.
Here, 'během' is used to express a time frame, meaning 'during'.