Whip is a type of Flexibility. Flexibility is related to Stretch. Stretch is related to Smell. Smell is related to Sock. 
Relevant is a synonym of Significant. Significant is similar to Considerable. 
Whip --IsA--> Flexibility <--RelatedTo--> Stretch <--RelatedTo--> Smell <--RelatedTo--> Sock 
Relevant <--Synonym--> Significant <--SimilarTo--> Considerable 