Compare is related to Relate. Relate is a synonym of Associate. Associate is a synonym of Connect. 
Greet is a type of Address. Welcome is a type of Greet. Welcome is related to Response. 
Compare <--RelatedTo--> Relate <--Synonym--> Associate <--Synonym--> Connect 
Address <--IsA-- Greet <--IsA-- Welcome <--RelatedTo--> Response 