Refuse is related to Deny. Deny is the opposite of Offer. Offer is a synonym of Crack. Crack is a synonym of Shot. 
Sodium is related to Salt. Salt is related to Dust. Dust is related to Powder. Equal is a type of Powder. 
Refuse <--RelatedTo--> Deny <--Antonym--> Offer <--Synonym--> Crack <--Synonym--> Shot 
Sodium <--RelatedTo--> Salt <--RelatedTo--> Dust <--RelatedTo--> Powder <--IsA-- Equal 