This is the 7143rd most frequent Russian word.
брюно
The word "брюно" does not exist in standard Russian; it may be a typo or a misunderstanding.
In this sentence, 'Брюно' is used as a proper noun, specifically a name.
Брюно приехал в город на поезде.
Bruno arrived in the city by train.
Here, 'Брюно' continues to function as a proper noun referring to a specific individual.
Брюно был известным путешественником.
Bruno was a famous traveler.
In this case, 'Брюно' is referenced as part of a memory, maintaining its status as a proper noun.