Preference is related to Choice. Choice is related to Mistake. Mistake is related to Regret. 
Shock is related to Reaction. Reaction is a synonym of Reply. Reply is related to Speech. Speech is related to Formal. 
Preference <--RelatedTo--> Choice <--RelatedTo--> Mistake <--RelatedTo--> Regret 
Shock <--RelatedTo--> Reaction <--Synonym--> Reply <--RelatedTo--> Speech <--RelatedTo--> Formal 