Directly from "novem":
* November: The ninth month of the year in the Julian and Gregorian calendars.
From "novem" with a slightly different form:
* Nonagenarian: A person who is 90 years old or older.
Other words related to nine:
* Ninth: Ordinal number for the position after eighth.
* Nine: The number 9.
* Ennead: A group of nine.
* Nonuple: A set of nine.
Let me know if you'd like to explore other Latin root words!