Exam is a form of Examination. Exam is related to Test. 
Miracle is related to Act. Act is related to Demonstrate. Demonstrate is a synonym of Exhibit. Exhibit is a synonym of Exhibition. 
Examination <--FormOf-- Exam <--RelatedTo--> Test 
Miracle <--RelatedTo--> Act <--RelatedTo--> Demonstrate <--Synonym--> Exhibit <--Synonym--> Exhibition 