Nod is derived from Disease. Disease is related to Example. Example is related to Problem. 
Window is part of Bus. Bus can be used for Kill. Kill is the opposite of Keep. Keep is related to Balance. 
Nod --DerivedFrom--> Disease <--RelatedTo--> Example <--RelatedTo--> Problem 
Window --PartOf--> Bus --UsedFor--> Kill <--Antonym--> Keep <--RelatedTo--> Balance 