Keep is related to Shade. Shade is related to Hidden. Hidden is the opposite of Visible. Visible is a synonym of Apparent. 
Panel is related to Discussion. Discussion is a synonym of Word. Game is a type of Word. 
Keep <--RelatedTo--> Shade <--RelatedTo--> Hidden <--Antonym--> Visible <--Synonym--> Apparent 
Panel <--RelatedTo--> Discussion <--Synonym--> Word <--IsA-- Game 