Pay is related to Notice. Notice is a synonym of Glimpse. Glimpse is a synonym of Ghost. Ghost is related to Invisible. 
Dot is a type of Cover. Cover is related to Entry. Entry is related to Hall. Hall is a synonym of Corridor. 
Pay <--RelatedTo--> Notice <--Synonym--> Glimpse <--Synonym--> Ghost <--RelatedTo--> Invisible 
Dot --IsA--> Cover <--RelatedTo--> Entry <--RelatedTo--> Hall <--Synonym--> Corridor 