What are rough? A crocodile’s scaly back, a log in the middle of the woods and the top of a coconut from a palm tree. 

What are smooth? A cube of butter, a heavy circular bowling ball and a sparkling mirror. 

What are fragile? A new wine glass, a bloated balloon and a clingy spider-web. 

What are robust? An oversized, weighty suitcase, a silver, sharp knife and a kitchen surface.

What are soft? A newborn kitten’s fur, a huge fluffy pillow and a bottle of talcum powder. 

What are solid? A bar of gold, a large brick and a sledgehammer.