Race is a type of Move. Move is related to Change. Change is related to Conversion. Conversion is a type of Transformation. 
Chronic is related to Fatigue. Fatigue is similar to Trouble. Trouble is a synonym of Bother. 
Race --IsA--> Move <--RelatedTo--> Change <--RelatedTo--> Conversion --IsA--> Transformation 
Chronic <--RelatedTo--> Fatigue <--SimilarTo--> Trouble <--Synonym--> Bother 