Specify is a synonym of Define. Define is related to Prove. Prove is related to Use. Abuse is a type of Use. 
Grandchild is the opposite of Grandfather. Grandfather is derived from Father. Father is related to Horse. 
Specify <--Synonym--> Define <--RelatedTo--> Prove <--RelatedTo--> Use <--IsA-- Abuse 
Grandchild <--Antonym--> Grandfather --DerivedFrom--> Father <--RelatedTo--> Horse 