Northwest is part of West. West is similar to South. Southern is etymologically related to South. Southern is related to Cotton. 
Diagnosis can Change. Utilize is a type of Change. Utilize is a synonym of Use. 
Northwest --PartOf--> West <--SimilarTo--> South <--EtymologicallyRelatedTo-- Southern <--RelatedTo--> Cotton 
Diagnosis --CapableOf--> Change <--IsA-- Utilize <--Synonym--> Use 