Priest is related to Religious. Religious is related to Cross. Cross is related to Distinguish. Distinguish is the opposite of Confuse. 
Remember is related to Memory. Recognition is a type of Memory. 
Priest <--RelatedTo--> Religious <--RelatedTo--> Cross <--RelatedTo--> Distinguish <--Antonym--> Confuse 
Remember <--RelatedTo--> Memory <--IsA-- Recognition 