I think its interesting what is included in the index, how it is included and then what is not.
Several of the DNE words are animals that are listed in the singular but they actually appear in the text as plurals. Bee also appears in the index but is not given a DNE and is referenced to only one page, 104. Although, bee-battered, which is not listed in the index, appears on page 19, bees, also not listed, on pages 78, 80, 94, 327, 614, 615, 618, 622, 642, 650 and buzz, which is listed, on pages 26, 101, 264, and 336. The word honey is also in the index and is mentioned on pages 19, 61, 66, 408 and 515.
Probably splitting hairs and coincidental but that makes 16 pages that contain B-words about bees, not to mention one of them being Bees' purple. If only there were six mentions of honey as well, but there are only five. Could count the honey in the index as well but then that would be inconsistent with how the B-words were counted. So its 16 of one or half a dozen of the other.
On the other hand, forearms is mentioned in the text five times but gets no mention in the index singular or otherwise.
Edited to fix a page number.