Far is related to Distant. Distant is the opposite of Familiar. Familiar is the opposite of Strange. Strange is a synonym of Unusual. 
Relative is related to Aunt. Aunt is related to Cousin. Cousin is related to Son. 
Far <--RelatedTo--> Distant <--Antonym--> Familiar <--Antonym--> Strange <--Synonym--> Unusual 
Relative <--RelatedTo--> Aunt <--RelatedTo--> Cousin <--RelatedTo--> Son 