Northern is similar to Federal. Federal is a synonym of Union. Union is a synonym of Join. Join is related to Term. 
Nut is a type of Block. Pad is a type of Block. Pad is related to Bed. 
Northern <--SimilarTo--> Federal <--Synonym--> Union <--Synonym--> Join <--RelatedTo--> Term 
Nut --IsA--> Block <--IsA-- Pad <--RelatedTo--> Bed 