Trail is a type of Track. Track is a synonym of Path. Path is related to Garden. Garden is related to Park. 
Clear is a type of Pass. Clear is related to Blue. Blue is related to Royal. Royal is related to Purple. 
Trail --IsA--> Track <--Synonym--> Path <--RelatedTo--> Garden <--RelatedTo--> Park 
Pass <--IsA-- Clear <--RelatedTo--> Blue <--RelatedTo--> Royal <--RelatedTo--> Purple 