Two Extremes

James Joyce used 29,899 different words in Ulysses. That's not the total word count but 29,899 separate words, many used multiple times, many of which were created by Joyce.

Dr. Seuss wrote Green Eggs and Ham with fifty words, of which “Not” is used the most often (82 times) and “I” the second most (81). All words except “anywhere” (used eight times) are monosyllabic.