This is the 6344th most frequent Arabic word.
إرنستو
"إرنستو" is a transliteration of the name "Ernesto" in Arabic, typically used as a proper noun.
The name "إرنستو" is used as the subject of the sentence to indicate the person being discussed.
إرنستو يُحب القراءة كثيرًا.
Ernesto loves reading very much.
Here, "إرنستو" is used as the object of the verb قابلتُ, indicating the person who was met.
قابلتُ إرنستو في المكتبة.
I met Ernesto in the library.
In this instance, "إرنستو" is used as a possessive noun to show that the book was written by him.