What small nonflowering plant has types called hair cap and peat?

What is a small folded pastry with a sealed edge called? What name belongs to both a Hawaiian hawk and a moon of Jupiter? What is a small hole or wound made by a sharp object called? What is a small, lightly armed patrol boat called? A small one is called a cascade and a large one a cataract. What are they? What small oval gland at the base of the brain is called the "master gland"? What do you call a small grand piano about 5 feet long? What is a small porch or steps leading to the entrance of a house called?