Grace is etymologically related to Grateful. Grace is a synonym of Blessing. Blessing is related to Daughter. 
Render is a type of Produce. Proof is a type of Produce. Proof is etymologically related to Prove. Prove is a synonym of Establish. 
Grateful <--EtymologicallyRelatedTo-- Grace <--Synonym--> Blessing <--RelatedTo--> Daughter 
Render --IsA--> Produce <--IsA-- Proof --EtymologicallyRelatedTo--> Prove <--Synonym--> Establish 