Price is related to Measurement. Measurement is related to Week. Week is etymologically related to Weak. Weak is a synonym of Vulnerable. 
Highway is the opposite of Way. Way is related to Tunnel. 
Price <--RelatedTo--> Measurement <--RelatedTo--> Week --EtymologicallyRelatedTo--> Weak <--Synonym--> Vulnerable 
Highway <--Antonym--> Way <--RelatedTo--> Tunnel 