Quick Quiz: Nouns Score: Change category, Flip order Reset Incorrect! Try again. Noun: bullock's heart Your choice? a stadium where bullfights take place small tropical American tree bearing a bristly heart-shaped acid tropical fruit a hard-wooded tropical tree yielding balata gum and heavy red timber   (Noun: bully tree) a painful swelling of the bursa of the first joint of the big toe   (Noun: bunion)