Bar is a synonym of Save. Save is related to Bank. Bank is related to Clerk. 
Regret is related to Pain. Pain is related to Rain. Rain is related to Cry. 
Bar <--Synonym--> Save <--RelatedTo--> Bank <--RelatedTo--> Clerk 
Regret <--RelatedTo--> Pain <--RelatedTo--> Rain <--RelatedTo--> Cry 