Scent is etymologically related to Science. Science is related to Like. Like is related to Bed. Bed is related to Sack. 
Aim is a synonym of Course. Course is related to Training. 
Scent --EtymologicallyRelatedTo--> Science <--RelatedTo--> Like <--RelatedTo--> Bed <--RelatedTo--> Sack 
Aim <--Synonym--> Course <--RelatedTo--> Training 