Form is related to Build. Build is a type of Better. Better is related to Improvement. Repair is a type of Improvement. 
Fabric is made of Thread. Thread is a type of Cord. Fiber is a type of Cord. 
Form <--RelatedTo--> Build --IsA--> Better <--RelatedTo--> Improvement <--IsA-- Repair 
Fabric --MadeOf--> Thread --IsA--> Cord <--IsA-- Fiber 