Line is a type of Lie. Line is related to Ship. Ship is related to Port. you are likely to find Vessel in/at/on Port. 
Stress is a synonym of Emphasize. Emphasize is etymologically related to Emphasis. Emphasis is a type of Importance. 
Lie <--IsA-- Line <--RelatedTo--> Ship <--RelatedTo--> Port <--AtLocation-- Vessel 
Stress <--Synonym--> Emphasize --EtymologicallyRelatedTo--> Emphasis --IsA--> Importance 