This is the 14006th most frequent Spanish word.
superventas
Bestseller.
Used as a noun to describe a product that has achieved high sales and popularity.
Este libro es un superventas en todo el país.
This book is a bestseller across the country.
Similarly, used as a noun to indicate high sales for a film product, emphasizing its success.
Esa película se ha convertido en un superventas en muy poco tiempo.
That movie has become a bestseller in a very short time.
Used as an adjective to describe an author whose works are bestsellers, highlighting her achievement and popularity.