Confuse is the opposite of Distinguish. Distinguish is a synonym of Separate. Separate is related to Cut. Cut is related to Like. 
Case is related to Secret. Secret is related to Garden. Garden is related to Park. 
Confuse <--Antonym--> Distinguish <--Synonym--> Separate <--RelatedTo--> Cut <--RelatedTo--> Like 
Case <--RelatedTo--> Secret <--RelatedTo--> Garden <--RelatedTo--> Park 