Chef is etymologically related to Head. Head is related to Bill. Bill wants (to) Sex. 
Move is related to Walk. Walk is related to Fitness. Fitness is the opposite of Weakness. 
Chef --EtymologicallyRelatedTo--> Head <--RelatedTo--> Bill --Desires--> Sex 
Move <--RelatedTo--> Walk <--RelatedTo--> Fitness <--Antonym--> Weakness 