Green is a different concept from Yellow. Yellow is a different concept from Blue. Blue is related to Factory. Factory is related to Facility. 
Worry is a synonym of Concern. Burden is a type of Concern. Burden is related to Beast. 
Green <--DistinctFrom--> Yellow <--DistinctFrom--> Blue <--RelatedTo--> Factory <--RelatedTo--> Facility 
Worry <--Synonym--> Concern <--IsA-- Burden <--RelatedTo--> Beast 