Buddy is related to Fellow. Fellow is related to Friendly. Friendly is a synonym of Gentle. 
Center is a type of Point. Point is a type of Mark. Stroke is a type of Mark. 
Buddy <--RelatedTo--> Fellow <--RelatedTo--> Friendly <--Synonym--> Gentle 
Center --IsA--> Point --IsA--> Mark <--IsA-- Stroke 