When referring to the twelve constellations that make up the zodiac, there are a variety of synonyms that can be used instead of "sign of the zodiac." Some popular options include astrological sign, star sign, zodiacal sign, sun sign, and horoscope sign. Each of these phrases refers to the same group of twelve constellations that are believed to have a significant impact on one's personality, behavior, and future predictions. Whether you prefer to say astrological sign or zodiacal sign, they all have the same meaning and are commonly used in both casual and professional settings.