Pair is the opposite of Single. Jump is a type of Single. Jump is related to Spark. Spark is related to Bit. 
Just is a synonym of Proper. Proper is the opposite of Wrong. 
Pair <--Antonym--> Single <--IsA-- Jump <--RelatedTo--> Spark <--RelatedTo--> Bit 
Just <--Synonym--> Proper <--Antonym--> Wrong 