Surprised is a form of Surprise. Surprise is related to Happiness. Happiness is related to Hope. 
Piece can be used for Fix. Fix is related to Mechanic. Mechanic is etymologically related to Machine. Machine can be used for Combine. 
Surprised --FormOf--> Surprise <--RelatedTo--> Happiness <--RelatedTo--> Hope 
Piece --UsedFor--> Fix <--RelatedTo--> Mechanic --EtymologicallyRelatedTo--> Machine --UsedFor--> Combine 