Below zero and Hyperborean

Hyperborean and below zero are semantically related in cold topic. In some cases you can use "Hyperborean" instead an adjective phrase "Below zero", when it comes to topics like chilly.

Hyperborean noun - (Greek mythology) one of a people that the ancient Greeks believed lived in a warm and sunny land north of the source of the north wind.

Below zero and Hyperborean are semantically related in cold topic. You can use "Below zero" instead an adjective "Hyperborean", if it concerns topics such as chilly.