This is the 4102nd most frequent Spanish word.
fidel
"Fidel" in Spanish means "faithful" or "loyal."
The word 'fidelidad' here is derived from 'fidel' to express the quality of being faithful or loyal.
La fidelidad de mi perro me conmueve.
The fidelity of my dog moves me.
In this case, 'Fidel' is used as a proper noun, a person's name.
Fidel es un nombre común en algunos países hispanohablantes.
Fidel is a common name in some Spanish-speaking countries.
Here, 'fidel' is used as an adjective to describe being loyal or faithful to one's friends.