Faint is related to Quiet. 
Spark is related to Impulse. Impulse is a synonym of Influence. Influence is related to Sphere. Sphere is a synonym of Zone. 
Faint <--RelatedTo--> Quiet 
Spark <--RelatedTo--> Impulse <--Synonym--> Influence <--RelatedTo--> Sphere <--Synonym--> Zone 