Efficient is a synonym of Effective. Effective is similar to Actual. Actual is related to Quantity. Quantity is related to Lot. 
Shooting is related to Bow. Bow is a type of Stick. Stick is related to Increase. 
Efficient <--Synonym--> Effective <--SimilarTo--> Actual <--RelatedTo--> Quantity <--RelatedTo--> Lot 
Shooting <--RelatedTo--> Bow --IsA--> Stick <--RelatedTo--> Increase 