Focus is a synonym of Stress. Stress is a synonym of Accent. Border can be used for Accent. 
Retreat is related to War. War is related to Oil. Oil is related to Origin. Origin is related to Cloud. 
Focus <--Synonym--> Stress <--Synonym--> Accent <--UsedFor-- Border 
Retreat <--RelatedTo--> War <--RelatedTo--> Oil <--RelatedTo--> Origin <--RelatedTo--> Cloud 