Occupation is related to Cook. Cook is a synonym of Prepare. Prepare is a synonym of Dress. 
Confusion is a different concept from Sure. Sure is related to Literature. Literature is related to Class. 
Occupation <--RelatedTo--> Cook <--Synonym--> Prepare <--Synonym--> Dress 
Confusion <--DistinctFrom--> Sure <--RelatedTo--> Literature <--RelatedTo--> Class 