Forest is a type of Single. Forest is related to Jungle. 
Day is related to Rest. Rest is a different concept from Busy. Busy is the opposite of Free. Free is related to Pass. 
Single <--IsA-- Forest <--RelatedTo--> Jungle 
Day <--RelatedTo--> Rest <--DistinctFrom--> Busy <--Antonym--> Free <--RelatedTo--> Pass 