Toll is etymologically related to Tale. Tale is related to Story. Story is related to Read. Read is related to Step. 
World is related to Whole. Heal is etymologically related to Whole. Heal is related to Recovery. 
Toll --EtymologicallyRelatedTo--> Tale <--RelatedTo--> Story <--RelatedTo--> Read <--RelatedTo--> Step 
World <--RelatedTo--> Whole <--EtymologicallyRelatedTo-- Heal <--RelatedTo--> Recovery 