Fantastic is a synonym of Wild. Wild is related to Dream. Dream is a synonym of Ambition. Ambitious is etymologically related to Ambition. 
Chase is related to Cat. Cat is related to Small. 
Fantastic <--Synonym--> Wild <--RelatedTo--> Dream <--Synonym--> Ambition <--EtymologicallyRelatedTo-- Ambitious 
Chase <--RelatedTo--> Cat <--RelatedTo--> Small 