Vitamin is a type of Nutrient. Carbohydrate is a type of Nutrient. Carbohydrate is similar to Protein. 
Workout is a synonym of Exercise. Exercise is related to Climb. Cliff would make you want to Climb. Cliff is related to Mountain. 
Vitamin --IsA--> Nutrient <--IsA-- Carbohydrate <--SimilarTo--> Protein 
Workout <--Synonym--> Exercise <--RelatedTo--> Climb <--CausesDesire-- Cliff <--RelatedTo--> Mountain 