Quick Quiz: Nouns Score: Change category, Flip order Reset Incorrect! Try again. Noun: pennyweight Your choice? a unit of apothecary weight equal to 24 grains seventh Sunday after Easter; commemorates the descent of the Holy Spirit on the apostles; a quarter day in Scotland   (Noun: pentecost) red gum tree of Tasmania an ulcer of mucuous membrane of the alimentary tract   (Noun: peptic ulcer)