Zero coupon bonds are generally

		discount bonds
		premium bonds
		riskless, because there are no coupon payments
		either discount or premium bonds, depending on whether rates have went up or down

As interest rates increase, bond prices

		do not change, because the prices are offsetting the rate increases
		increase
		do not change, because they are fixed by contract
		decrease

The semi-annual interest payments that corporate bonds in the U.S. typically pay are conventionally referred to as

		coupon payments
		dividends
		call payments
		yield payments
		premium payments