Stick is the opposite of Fall. Plane can Fall. 
Physical is related to Weight. Weight is a type of Importance. Significance is a type of Importance. Significance is a type of Meaning. 
Stick <--Antonym--> Fall <--CapableOf-- Plane 
Physical <--RelatedTo--> Weight --IsA--> Importance <--IsA-- Significance --IsA--> Meaning 