Sekt is the term associated with German sparkling wine, but it is not an exact German equivalent of Prosecco. Origin, grapes, sweetness and method vary. Winzersekt is a more specific category with bottle-fermentation requirements, so the rest of the label matters as much as that first word.
You recognize Prosecco on a wine list. Then Sekt appears, and the easy question is whether it is simply the same thing in German.
It is a reasonable question. The answer needs a little more room than a translation.
What does Sekt tell you?
It points you toward sparkling wine, but does not describe one uniform style. The German Wine Institute explains Winzersekt as a particular category and discusses its bottle-fermentation tradition. Those details should not be applied to every bottle called Sekt.
Read the complete origin description, grape information, sweetness and method where stated. Without them, the comparison is still missing much of the wine.
What distinguishes Prosecco?
Prosecco DOC has a defined Italian production area and grape requirements. For spumante, the sparkling fermentation takes place in sealed tanks. Our Martinotti or Charmat method guide explains how that works.
The Prosecco styles guide also separates three things often bundled together: sparkle, sweetness and color.
Order what you mean
If you want Bella Principessa white Brut or rosé Brut, those names identify the wines more clearly than asking for something equivalent from another country. If you are comparing wines, sweetness and texture are more useful than nationality alone.
DOC and DOCG explains the Italian designations. Knowing a few precise words can make ordering feel much less like a guessing game.
Sources
German Wine Institute: Winzersekt; Prosecco DOC regulations.
