Nail is a type of Attach. Cling entails/necessarily involves Attach. Cling is a synonym of Hang. Hang is related to Wave. 
Warmth is related to Sun. Sun is related to Hot. 
Nail --IsA--> Attach <--Entails-- Cling <--Synonym--> Hang <--RelatedTo--> Wave 
Warmth <--RelatedTo--> Sun <--RelatedTo--> Hot 