Why is it titled decameron?

The title "Decameron" derives from the Greek Words "deka," meaning ten, and "hemera," meaning day. The work, written by Giovanni Boccaccio in the 14th century, features a frame narrative in which ten young people—seven women and three men—flee plague-ridden Florence and retreat to a villa. During their ten-day stay, they take turns telling stories, leading to a total of one hundred tales. The title reflects both the number of storytellers and the duration of their storytelling adventure.