Plane is related to Jet. Jet is related to Fast. Faster is a form of Fast. Faster is related to Speed. 
Significance is a synonym of Implication. Implication is related to Law. Law is related to National. 
Plane <--RelatedTo--> Jet <--RelatedTo--> Fast <--FormOf-- Faster <--RelatedTo--> Speed 
Significance <--Synonym--> Implication <--RelatedTo--> Law <--RelatedTo--> National 