Lover is a synonym of Friend. Friend is related to Associate. Teammate is a type of Associate. 
Increased is related to Raise. Raise is a synonym of Enhance. Enhance is a synonym of Improve. 
Lover <--Synonym--> Friend <--RelatedTo--> Associate <--IsA-- Teammate 
Increased <--RelatedTo--> Raise <--Synonym--> Enhance <--Synonym--> Improve 