Account is a type of Norm. Norm is a synonym of Average. Average is related to Statistics. Correlation is a type of Statistics. 
you are likely to find Sink in/at/on Home. Sink is related to Drain. 
Account --IsA--> Norm <--Synonym--> Average <--RelatedTo--> Statistics <--IsA-- Correlation 
Home <--AtLocation-- Sink <--RelatedTo--> Drain 