Speculation is a synonym of Venture. Venture is a synonym of Adventure. Adventure is related to Unknown. Unknown is a type of Region. 
Sock is related to Shoe. Shoe is related to Outer. Outer is related to Porch. 
Speculation <--Synonym--> Venture <--Synonym--> Adventure <--RelatedTo--> Unknown --IsA--> Region 
Sock <--RelatedTo--> Shoe <--RelatedTo--> Outer <--RelatedTo--> Porch 