This is the 6624th most frequent Catalan word.
rodolfo
"Rodolfo" is a proper noun in Catalan, used as a given name equivalent to "Rudolph" in English.
In this sentence, 'Rodolfo' is used as a personal name, referring to an individual.
El meu amic Rodolfo va venir a sopar ahir.
My friend Rodolfo came for dinner yesterday.
Here, 'Rodolfo' is the title of a book, signifying its use as a proper noun.
Vaig llegir un llibre que es diu Rodolfo.
I read a book called Rodolfo.
In this instance, 'Rodolfo' refers to a character within a story or legend.