Throw is a type of Blanket. Pass is a type of Throw. Pass is a synonym of Sink. Settle is a type of Sink. 
Idea is related to Potential. Potential is related to Could. Could is etymologically related to Shall. 
Blanket <--IsA-- Throw <--IsA-- Pass <--Synonym--> Sink <--IsA-- Settle 
Idea <--RelatedTo--> Potential <--RelatedTo--> Could --EtymologicallyRelatedTo--> Shall 