Sharp is a synonym of Exact. Exact is a synonym of Strict. Strict is etymologically related to Strain. Strain is a synonym of Tune. 
Side is related to Rice. Rice is related to Common. 
Sharp <--Synonym--> Exact <--Synonym--> Strict --EtymologicallyRelatedTo--> Strain <--Synonym--> Tune 
Side <--RelatedTo--> Rice <--RelatedTo--> Common 