Rumours abound, of course, that Albus Dumbledore, once Supreme Mugwump of the International Confederation of Wizards and Chief Warlock of the Wizengamot, is no longer up to the task of managing the prestigious school of Hogwarts.
There are no more uses of "abound" in the book.
Show samples from other sources
Once more it was pouring, and my irregular lawn, well-shaved by Gatsby’s gardener, abounded in small, muddy swamps and prehistoric marshes.
F. Scott Fitzgerald -- The Great Gatsby
The message repeats, and groans and eye-rolling abound.