Composition is a type of Essay. Composition is related to Peer. Peer is related to Colleague. 
Underlying is a synonym of Fundamental. Fundamental is related to Theory. Theory is a synonym of Scheme. 
Essay <--IsA-- Composition <--RelatedTo--> Peer <--RelatedTo--> Colleague 
Underlying <--Synonym--> Fundamental <--RelatedTo--> Theory <--Synonym--> Scheme 