This is the 8594th most frequent Chinese word.
vallejo
"Vallejo" is not a Chinese word. It is a Spanish surname and the name of a city in California, USA.
In this sentence, 'Vallejo' is used as a proper noun referring to a geographical location.
Vallejo是加州的一个城市。
Vallejo is a city in California.
Here, 'Vallejo' represents the place of origin of the author, specifying their identity.
我刚读了一本由Vallejo作家的书。
I just read a book written by an author from Vallejo.
In this usage, 'Vallejo' is discussed in the context of its phonetic qualities in another language.