This is the 684th most frequent Spanish word.
autor
Author.
In this sentence, 'autor' refers to the writer or creator of a literary work.
Gabriel García Márquez es el autor de 'Cien años de soledad'.
Gabriel García Márquez is the author of 'One Hundred Years of Solitude'.
Here, 'autor' is used to describe a person whose identity as the creator of a work is not known.
El autor desconocido dejó su obra en la biblioteca.
The unknown author left their work in the library.
In this context, 'autor'/‘autora’ extends beyond writing to mean the originator or initiator of an idea.