Pill is etymologically related to Pool. Pill is related to Medication. Medication is a type of Therapy. 
Debut is related to Release. Release is a synonym of Rescue. Rescue is the opposite of Abandon. Expose is a type of Abandon. 
Pool <--EtymologicallyRelatedTo-- Pill <--RelatedTo--> Medication --IsA--> Therapy 
Debut <--RelatedTo--> Release <--Synonym--> Rescue <--Antonym--> Abandon <--IsA-- Expose 