A lot of words in English have a Germanic and Latin version. The Germanic one tends to be more common in everyday use, while the Latin one tends to be more formal, a consequence of French being the language of the aristocracy back in the day. Spanish is all Latin-derived, so they would of course be the everyday words.
‘Tenebroso’ is commonly used in Spanish, at least in Spain. This whole thread is very interesting.
A lot of words in English have a Germanic and Latin version. The Germanic one tends to be more common in everyday use, while the Latin one tends to be more formal, a consequence of French being the language of the aristocracy back in the day. Spanish is all Latin-derived, so they would of course be the everyday words.
Voldemort is Señor Tenebroso.