If I read that correctly, it's about comparing the entire password, not portions thereof, so it's not really about "multiple English word" passwords (except that I assume "passwords obtained from previous breach corpuses" is likely to contain some specific examples of the breed, almost certainly including "correct horse battery staple").
When processing requests to establish and change memorized secrets, verifiers SHALL compare the prospective secrets against a list that contains values known to be commonly-used, expected, or compromised. For example, the list MAY include, but is not limited to:
- Passwords obtained from previous breach corpuses.
- Dictionary words.
- Repetitive or sequential characters (e.g. ‘aaaaaa’, ‘1234abcd’).
- Context-specific words, such as the name of the service, the username, and derivatives thereof.
[1] https://pages.nist.gov/800-63-3/sp800-63b.html