This is the 7909th most frequent Russian word.
керчь
"Керчь" is a proper noun referring to Kerch, a city in Crimea.
Here, 'Керчь' is a proper noun referring to a geographical location.
Керчь — это город в Крыму.
Kerch is a city in Crimea.
In this sentence, 'Керчь' is still a proper noun, emphasizing its feature, the bridge.
Керчь известна своим мостом.
Kerch is known for its bridge.
Here, 'Керчь' is used as a location indicating the destination of the arrival.