Improve is a synonym of Advance. Advance is a synonym of Accelerate. Accelerate is a synonym of Hurry. 
Buddy is related to Deputy. Deputy is a type of Legislator. Whip is a type of Legislator. 
Improve <--Synonym--> Advance <--Synonym--> Accelerate <--Synonym--> Hurry 
Buddy <--RelatedTo--> Deputy --IsA--> Legislator <--IsA-- Whip 