What are some derivatives for annus?

The term "annus," which is Latin for "year," has several derivatives in English and other languages. In English, it is the root of Words like "annual," meaning occurring once a year, and "anniversary," marking the yearly recurrence of a significant event. Other derivatives include "annuity," a financial product that provides yearly payments, and "biennial," referring to events occurring every two years. In languages like Spanish and Italian, similar forms such as "anual" and "annuale" also derive from "annus."