Mate is a synonym of Buddy. Buddy is related to Silver. Silver is related to Bullet. 
Income is related to Salary. Salary is related to Work. Work is related to Raise. 
Mate <--Synonym--> Buddy <--RelatedTo--> Silver <--RelatedTo--> Bullet 
Income <--RelatedTo--> Salary <--RelatedTo--> Work <--RelatedTo--> Raise 