Heat is related to Desert. Desert is a synonym of Waste. Waste is a different concept from Saving. Saving is related to Earn. 
Match is a synonym of Mate. Mate is a type of Friend. Friend is related to Bird. Bird is related to Word. 
Heat <--RelatedTo--> Desert <--Synonym--> Waste <--DistinctFrom--> Saving <--RelatedTo--> Earn 
Match <--Synonym--> Mate --IsA--> Friend <--RelatedTo--> Bird <--RelatedTo--> Word 