Important is a synonym of Critical. Critical is related to Crisis. Crisis is related to Chaos. Chaos is the opposite of Organize. 
Perception is a synonym of Vision. Vision is related to Double. 
Important <--Synonym--> Critical <--RelatedTo--> Crisis <--RelatedTo--> Chaos <--Antonym--> Organize 
Perception <--Synonym--> Vision <--RelatedTo--> Double 