Catch is a type of Hurt. Catch is related to Ball. Ball is a synonym of Blast. 
Psychological is a different concept from Physical. Physical is related to Matter. Matter is related to Stone. 
Hurt <--IsA-- Catch <--RelatedTo--> Ball <--Synonym--> Blast 
Psychological <--DistinctFrom--> Physical <--RelatedTo--> Matter <--RelatedTo--> Stone 