Opinion is a synonym of Thought. Thought is related to Insight. Insight is related to Idea. Idea is related to Principle. 
Change is related to Circle. Track can Circle. 
Opinion <--Synonym--> Thought <--RelatedTo--> Insight <--RelatedTo--> Idea <--RelatedTo--> Principle 
Change <--RelatedTo--> Circle <--CapableOf-- Track 