This is the 8564th most frequent Spanish word.
ruiz
"Ruiz" is a Spanish surname; it does not have a standalone meaning as a word.
In this example, 'Ruiz' is part of the full name of a person, indicating a fictional character's name.
En el libro que leí, el personaje principal se llamaba Juan Ruiz.
In the book I read, the main character was named Juan Ruiz.
In this sentence, 'Ruiz' is used as a proper noun representing a surname.
Ruiz es un apellido bastante común en España.
Ruiz is a fairly common surname in Spain.
Here, 'Ruiz' identifies a family name, encompassing all members as a collective.