kölner
Cologne
Relating to the city of Cologne or originating from it. This adjective is not declined.
Ich trinke gerne ein kühles Kölsch, ein typisches Kölner Bier.
I like drinking a cool Kölsch, a typical Cologne beer.

Cologne
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Cologne
Relating to the city of Cologne or originating from it. This adjective is not declined.
Ich trinke gerne ein kühles Kölsch, ein typisches Kölner Bier.
I like drinking a cool Kölsch, a typical Cologne beer.

Adjectives derived from city names and ending in '-er' are not declined. The form 'kölner' stays the same, regardless of the gender, case, or number of the noun.
Der Kölner Dom ist weltberühmt.
Cologne Cathedral is world-famous.
The word 'kölner' is formed from the city name 'Köln' (Cologne) with the suffix '-er'. This pattern is used for many German cities to express belonging or association.
Die Kölner Universität ist eine der ältesten in Europa.
The University of Cologne is one of the oldest in Europe.
As an adjective, 'kölner' is always written in lowercase. This is an important difference from nouns that refer to people and are capitalized.
Das Kölner Stadtarchiv bewahrt wichtige Dokumente auf.
The Cologne city archive preserves important documents.