Cost is etymologically related to Choose. Cost is related to Quality. Qualify is derived from Quality. Qualify is a synonym of Characterize. 
Bright is related to Toy. Toy is a type of Manipulate. 
Choose <--EtymologicallyRelatedTo-- Cost <--RelatedTo--> Quality <--DerivedFrom-- Qualify <--Synonym--> Characterize 
Bright <--RelatedTo--> Toy --IsA--> Manipulate 