Stream is a type of Motion. Stream is a type of Course. Course is related to Lawn. 
Mark is etymologically related to March. Mark is related to Visual. Visual is related to Effect. Effect is a synonym of Essence. 
Motion <--IsA-- Stream --IsA--> Course <--RelatedTo--> Lawn 
March <--EtymologicallyRelatedTo-- Mark <--RelatedTo--> Visual <--RelatedTo--> Effect <--Synonym--> Essence 