Permanent is related to Stable. Stable is a type of Illness. Illness is related to Pill. 
Nail is a type of Attach. Nail is related to Bullet. Bullet is related to Food. Food is etymologically related to Foster. 
Permanent <--RelatedTo--> Stable --IsA--> Illness <--RelatedTo--> Pill 
Attach <--IsA-- Nail <--RelatedTo--> Bullet <--RelatedTo--> Food --EtymologicallyRelatedTo--> Foster 