Run is etymologically related to Random. Run is related to Sidewalk. 
Pack is a type of Seal. Seal is a type of Hunt. Hunt is a type of Labor. Slavery is a type of Labor. 
Random <--EtymologicallyRelatedTo-- Run <--RelatedTo--> Sidewalk 
Pack --IsA--> Seal --IsA--> Hunt --IsA--> Labor <--IsA-- Slavery 