Lover is a synonym of Friend. Afraid is etymologically related to Friend. 
Confidence is a synonym of Faith. Faith can be Good. Good is related to Clear. Clear is a type of Vanish. 
Lover <--Synonym--> Friend <--EtymologicallyRelatedTo-- Afraid 
Confidence <--Synonym--> Faith --HasProperty--> Good <--RelatedTo--> Clear --IsA--> Vanish 