Retreat is the opposite of Come. Come is related to Instruction. 
Emphasize is etymologically related to Emphasis. Emphasize is a synonym of Stress. Background is a type of Stress. Background is a type of View. 
Retreat <--Antonym--> Come <--RelatedTo--> Instruction 
Emphasis <--EtymologicallyRelatedTo-- Emphasize <--Synonym--> Stress <--IsA-- Background --IsA--> View 