Quick Quiz: Nouns Score: Change category, Flip order Reset Incorrect! Try again. Noun: pentoxide Your choice? the practice of making a debtor work for his creditor until the debt is discharged an oxide containing five atoms of oxygen in the molecule a communist nation in eastern Asia; the most populous country in the world   (Noun: people's republic of china) tomato and cheese pizza with pepperoni   (Noun: pepperoni pizza)