Father is a type of Leader. Grandfather is derived from Father. Grandfather is a type of Grandparent. 
Crazy is a synonym of Bug. Bug is related to Bee. Bee is related to Nail. Nail is related to Habit. 
Leader <--IsA-- Father <--DerivedFrom-- Grandfather --IsA--> Grandparent 
Crazy <--Synonym--> Bug <--RelatedTo--> Bee <--RelatedTo--> Nail <--RelatedTo--> Habit 