Comedy is related to Humor. Humor is a type of Quality. Quality is a synonym of Mean. 
Science is related to Physical. Physical is related to Attack. Attack is a different concept from Defense. 
Comedy <--RelatedTo--> Humor --IsA--> Quality <--Synonym--> Mean 
Science <--RelatedTo--> Physical <--RelatedTo--> Attack <--DistinctFrom--> Defense 