Hazard is related to Concern. Concern is a synonym of Refer. Refer is a synonym of Touch. Contact is a type of Touch. 
Borrow is the opposite of Lend. Loan is etymologically related to Lend. 
Hazard <--RelatedTo--> Concern <--Synonym--> Refer <--Synonym--> Touch <--IsA-- Contact 
Borrow <--Antonym--> Lend <--EtymologicallyRelatedTo-- Loan 