Remarkable is a synonym of Strange. Stranger is a form of Strange. Stranger is a synonym of Alien. 
Singer is related to Vocal. Vocal is related to Voice. Voice is a synonym of Vote. 
Remarkable <--Synonym--> Strange <--FormOf-- Stranger <--Synonym--> Alien 
Singer <--RelatedTo--> Vocal <--RelatedTo--> Voice <--Synonym--> Vote 