This is the 373rd most frequent Spanish word.
manuel
"Manuel" is a Spanish given name, equivalent to "Emmanuel" or "Manuel" in English.
In this sentence, 'Manuel' is used as a proper noun, referring to a person's first name.
Manuel es un estudiante aplicado.
Manuel is a diligent student.
Here, 'manual' is employed as a common noun meaning 'instruction book' in Spanish.
Voy a consultar el manual de instrucciones antes de armar este mueble.
I am going to consult the instruction manual before assembling this furniture.
In this context, 'manual' is an adjective describing a type of work performed by hand.