Fill is a type of Change. Fill is a type of Work. Work is a synonym of Function. Function is a type of Utility. 
Pleasure is a type of Choice. Choice is related to Chance. Chance is related to Odds. 
Change <--IsA-- Fill --IsA--> Work <--Synonym--> Function --IsA--> Utility 
Pleasure --IsA--> Choice <--RelatedTo--> Chance <--RelatedTo--> Odds 