Mountain is related to Relief. Relief is related to Shade. Shade is related to Half. 
Pull is related to Mass. Mass is etymologically related to Mission. Mission is related to Operation. Operation is a synonym of Performance. 
Mountain <--RelatedTo--> Relief <--RelatedTo--> Shade <--RelatedTo--> Half 
Pull <--RelatedTo--> Mass --EtymologicallyRelatedTo--> Mission <--RelatedTo--> Operation <--Synonym--> Performance 