Mixed is related to Confusion. Confusion is related to Mind. 
Click can cause/lead to Understand. Understand is a synonym of Know. Known is a form of Know. Known is related to Certain. 
Mixed <--RelatedTo--> Confusion <--RelatedTo--> Mind 
Click --Causes--> Understand <--Synonym--> Know <--FormOf-- Known <--RelatedTo--> Certain 