What is the difference between Kindle unlimited and Kindle prime?

Kindle Unlimited is a subscription service that allows users to borrow and read an extensive selection of eBooks, audiobooks, and magazines for a monthly fee. In contrast, Kindle Prime refers to the benefits available to Amazon Prime members, which include access to a limited selection of eBooks through the Prime Reading program, as well as discounts on Kindle purchases. While Kindle Unlimited offers a broader range of titles, Prime Reading provides a smaller, curated collection for free with a Prime membership.