
zentral
central
Located in the middle or in the center.
Wir haben ein Hotel in zentraler Lage direkt am Hauptbahnhof gebucht.
We booked a hotel in a central location right by the main train station.
central
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central
Located in the middle or in the center.
Wir haben ein Hotel in zentraler Lage direkt am Hauptbahnhof gebucht.
We booked a hotel in a central location right by the main train station.

central
Of fundamental importance; essential, decisive, or most important.
Die Kundenbetreuung spielt eine zentrale Rolle für unseren Erfolg.
Customer service plays a central role in our success.

centralized
Controlled or organized from a single place.
Alle Daten werden in einer zentralen Datenbank gespeichert.
All data is stored in a centralized database.
The adjective 'zentral' (central) is derived directly from the noun 'das Zentrum' (the center). So it always describes a quality related to a midpoint or core, whether geographically or thematically.
Der zentrale Platz der Stadt ist der Treffpunkt für alle.
The central square of the city is the meeting point for everyone.
In the figurative meaning of 'wichtig' (important) or 'wesentlich' (essential), 'zentral' (central) often appears in fixed collocations. Very common are 'eine zentrale Rolle spielen' (to play a central role), 'ein zentrales Thema sein' (to be a central topic), and 'von zentraler Bedeutung sein' (to be of central importance).
Die Digitalisierung ist ein zentrales Thema in der heutigen Arbeitswelt.
Digitalization is a central topic in today's working world.
The exact meaning of 'zentral' (central) can be understood from the accompanying nouns. Words like 'Lage' (location) or 'Platz' (square/place) point to the geographical center. Abstract terms like 'Frage' (question), 'Problem' (problem), or 'Rolle' (role) point to importance.
Die Wohnung liegt sehr zentral, nur fünf Minuten vom Bahnhof entfernt.
The apartment is very central, only five minutes from the train station.
essential / significantly
Wesentlich and zentral can both express great importance. Wesentlich emphasizes that something is fundamentally important. Zentral places something at the center of a topic or discussion. Use wesentlich for an important prerequisite, and zentral for the main point of a discussion.

Die Finanzierung ist der zentrale Punkt der Diskussion über das Projekt.
The funding is the central point of the discussion about the project.
Eine gesicherte Finanzierung ist für den Erfolg des Projekts wesentlich.
Secure funding is essential to the project's success.