Year of grace is a term used to refer to a year that is considered significant, often marked with religious or spiritual importance. However, there are several other synonyms for this term that can be used to express a similar sentiment. These include "annus mirabilis," which translates to "year of marvels" in Latin, and "anniversary," which refers to the annual celebration of a significant event. Another term that can be used interchangeably with year of grace is "holy year," which is a term commonly used in the Catholic Church to refer to years of particular spiritual significance. Overall, there are multiple synonyms that can be used to express the concept of the year of grace.