Ad is related to Average. Average is a synonym of Usual. Usual is a different concept from Different. Different is similar to Opposite. 
Father is related to Relative. Relative is related to Cousin. Cousin is related to Monkey. you are likely to find Monkey in/at/on Group. 
Ad <--RelatedTo--> Average <--Synonym--> Usual <--DistinctFrom--> Different <--SimilarTo--> Opposite 
Father <--RelatedTo--> Relative <--RelatedTo--> Cousin <--RelatedTo--> Monkey --AtLocation--> Group 