Answer
Similarities: Both Canterbury Tales and Decameron are collections of stories told by multiple characters. They both provide a glimpse into the social and cultural norms of their respective time periods.
Differences: Canterbury Tales is written in Middle English and focuses on a group of pilgrims traveling to Canterbury, while Decameron is written in Italian and centers around a group of young people escaping the Black Death by retreating to a villa. The themes and subject matter of the stories in each collection also differ.