Crawl is related to Movement. Movement is related to Rush. Rush is the opposite of Calm. 
Column is related to Editor. Editor is a type of Worker. Contractor is a type of Worker. 
Crawl <--RelatedTo--> Movement <--RelatedTo--> Rush <--Antonym--> Calm 
Column <--RelatedTo--> Editor --IsA--> Worker <--IsA-- Contractor 