ebnen
to level
To make a surface smooth, flat, or even by removing uneven areas.
Die Bauarbeiter ebneten den Weg mit einer großen Walze.
The construction workers leveled the path with a large roller.

to level / pave
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to level
To make a surface smooth, flat, or even by removing uneven areas.
Die Bauarbeiter ebneten den Weg mit einer großen Walze.
The construction workers leveled the path with a large roller.

The verb 'ebnen' is derived directly from the adjective 'eben', which means 'flat' or 'even'. So 'ebnen' literally means 'to make something even'.
Die Landschaft hier ist sehr eben und ideal zum Radfahren.
The landscape here is very flat and ideal for cycling.
The figurative meaning is used almost exclusively in the fixed expression 'den Weg ebnen für' + accusative. It means to create the foundation for something in the future.
Seine Forschung ebnete den Weg für eine neue Generation von Medikamenten.
His research paved the way for a new generation of medicines.
You can recognize the literal meaning from the object of the sentence. If it mentions 'Boden' (ground), 'Grundstück' (plot of land), 'Straße' (road), or 'Gelände' (terrain), it is about smoothing a physical surface.
Bevor wir das Haus bauen, müssen wir das Grundstück ebnen.
Before we build the house, we have to level the plot of land.
to prepare
'vorbereiten' and 'ebnen' can both describe making something possible. 'vorbereiten' is direct and general: you plan, organize, or get something ready for later. In this relation, 'ebnen' is usually used in the phrase 'den Weg ebnen für' (to pave the way for). It means that you reduce obstacles or create good conditions. Learners may confuse the words because both point toward a later goal. When it is about concrete work, you usually say 'vorbereiten'. When you want to emphasize that something makes success or a next step easier, 'den Weg ebnen' fits better.

Die neue Regel ebnet den Weg für einfachere Anträge.
The new rule paves the way for simpler applications.
Meine Mutter bereitet alles für den Termin am Montag vor.
My mother is preparing everything for the appointment on Monday.