This is the 9144th most frequent Spanish word.
youssef
"Youssef" is not a Spanish word; it is a given name of Arabic origin.
In this sentence, 'Youssef' is used as a proper noun, specifically referring to a person by their name, suggesting the subject of the sentence.
Youssef es un estudiante muy dedicado.
Youssef is a very dedicated student.
Here, 'Youssef' is functioning as a proper noun, indicating the name of the individual whom the speaker met.
Me encontré con Youssef en el mercado ayer.
I ran into Youssef at the market yesterday.
In this case, 'Youssef' again serves as a proper noun, identifying the person responsible for presenting the impressive project.