Risk is related to Bet. Bet is related to Dare. Dare is related to Brave. Brave is the opposite of Mean. 
Concentration is a synonym of Mind. Mind is related to Inside. Inside is related to Possess. 
Risk <--RelatedTo--> Bet <--RelatedTo--> Dare <--RelatedTo--> Brave <--Antonym--> Mean 
Concentration <--Synonym--> Mind <--RelatedTo--> Inside <--RelatedTo--> Possess 