"Biannual" or "semiannual" refers to events that occur twice a year. This term is often used in various contexts, such as financial reports, magazine publications, or conferences. For example, a biannual report might summarize a company's performance every six months. It's important to note that "biannual" can sometimes be confused with "biennial," which means occurring every two years. To avoid confusion, it's helpful to remember that "biannual" involves two occurrences within a single year, while "biennial" spans a longer time frame.