Donate is the opposite of Steal. Steal is the opposite of Earn. Earn is related to Make. 
Saving is related to Value. Importance is a type of Value. Importance is a synonym of Significance. 
Donate <--Antonym--> Steal <--Antonym--> Earn <--RelatedTo--> Make 
Saving <--RelatedTo--> Value <--IsA-- Importance <--Synonym--> Significance 