Island can be used for Hide. Island is related to Alone. Alone is related to Single. Cool is a type of Single. 
Stay is a type of Stop. Stop is the opposite of Move. Movement is derived from Move. 
Hide <--UsedFor-- Island <--RelatedTo--> Alone <--RelatedTo--> Single <--IsA-- Cool 
Stay --IsA--> Stop <--Antonym--> Move <--DerivedFrom-- Movement 