Nearby is related to Elbow. Elbow is related to Leg. Leg can be used for Stability. 
Age is the opposite of Grow. Leaf is a type of Grow. Leaf is typically near Tree. Limb is part of Tree. 
Nearby <--RelatedTo--> Elbow <--RelatedTo--> Leg --UsedFor--> Stability 
Age <--Antonym--> Grow <--IsA-- Leaf <--LocatedNear--> Tree <--PartOf-- Limb 