Individual is the opposite of Crowd. Crowd is the opposite of Empty. Empty is related to Hole. Heal is etymologically related to Hole. 
Cute is related to Pretty. Pretty is related to Appearance. Appearance is a synonym of Look. 
Individual <--Antonym--> Crowd <--Antonym--> Empty <--RelatedTo--> Hole <--EtymologicallyRelatedTo-- Heal 
Cute <--RelatedTo--> Pretty <--RelatedTo--> Appearance <--Synonym--> Look 