Rosh Hodesh is a term used in Judaism to refer to the first day of a new month in the lunar cycle. Synonyms for this term include "New Moon," "First Day of the Month," and "Beginning of the Month." This term is significant in the Jewish calendar and marks the beginning of a new cycle. It is observed with prayers, special readings from the Torah, and festive meals. Some other synonyms that can be used for Rosh Hodesh are "head of the month," "new beginning," "starting anew," and "the first crescent." Regardless of the synonym used, Rosh Hodesh is an important occasion that is celebrated and observed with reverence.