Weak is a synonym of Strong. Strength is etymologically related to Strong. Strength is related to Current. 
Special is similar to Extraordinary. Extraordinary is related to Unusual. Unusual is a synonym of Odd. Odd is a synonym of Ridiculous. 
Weak <--Synonym--> Strong <--EtymologicallyRelatedTo-- Strength <--RelatedTo--> Current 
Special <--SimilarTo--> Extraordinary <--RelatedTo--> Unusual <--Synonym--> Odd <--Synonym--> Ridiculous 