Suit is related to Outfit. Outfit is related to Dress. Dress is related to Clothes. 
Weaken is a type of Change. Weaken is the opposite of Build. Build is related to Builder. Contractor is a type of Builder. 
Suit <--RelatedTo--> Outfit <--RelatedTo--> Dress <--RelatedTo--> Clothes 
Change <--IsA-- Weaken <--Antonym--> Build <--RelatedTo--> Builder <--IsA-- Contractor 