Distinguish is related to Mental. Mental is related to Confusion. Confusion is related to Understanding. 
Inspection is a synonym of View. View is a synonym of See. See is related to Vision. Vision is related to Sense. 
Distinguish <--RelatedTo--> Mental <--RelatedTo--> Confusion <--RelatedTo--> Understanding 
Inspection <--Synonym--> View <--Synonym--> See <--RelatedTo--> Vision <--RelatedTo--> Sense 