Seollal is the Korean holiday commonly compared with Chuseok because both are major family festivals.
Seollal marks the Korean Lunar New Year, while Chuseok is the major autumn harvest holiday. Both occasions often involve family travel, traditional foods, respect for elders, and ceremonies connected with family ancestry.
The two holidays occur in different seasons and have different central foods and customs. Seollal is strongly associated with tteokguk, a rice-cake soup, while Chuseok is associated with harvest foods and songpyeon.
Seollal and Chuseok are not interchangeable names. One begins the traditional lunar year; the other occurs in the eighth lunar month and centers on the autumn harvest.