Cover is a synonym of Treat. Shock is a type of Treat. 
Land is related to Slope. Slope is a different concept from Top. Top is a type of Intensity. Intensity is a synonym of Strength. 
Cover <--Synonym--> Treat <--IsA-- Shock 
Land <--RelatedTo--> Slope <--DistinctFrom--> Top --IsA--> Intensity <--Synonym--> Strength 