Unfold is the opposite of Fold. Fold is related to Card. 
Spiritual is derived from Spirit. you are likely to find Spirit in/at/on Bar. Bar is a synonym of Measure. Radical is a type of Measure. 
Unfold <--Antonym--> Fold <--RelatedTo--> Card 
Spiritual --DerivedFrom--> Spirit --AtLocation--> Bar <--Synonym--> Measure <--IsA-- Radical 