Mushroom is a synonym of Gain. Round is a type of Gain. Baseball can be Round. 
Account is related to Notice. Notice is related to Warning. Warning is related to Duck. Duck is related to Flying. 
Mushroom <--Synonym--> Gain <--IsA-- Round <--HasProperty-- Baseball 
Account <--RelatedTo--> Notice <--RelatedTo--> Warning <--RelatedTo--> Duck <--RelatedTo--> Flying 