Piece can be used for Puzzle. Puzzle can be used for Play. Play is related to Reply. Reply is the opposite of Inquiry. 
Grass is related to Other. Other is similar to Opposite. Opposite is a synonym of Reverse. 
Piece --UsedFor--> Puzzle --UsedFor--> Play <--RelatedTo--> Reply <--Antonym--> Inquiry 
Grass <--RelatedTo--> Other <--SimilarTo--> Opposite <--Synonym--> Reverse 