In Vedic astrology the Moon sign, or Chandra rashi, usually carries more weight than the Sun sign, because the Moon describes the mind, emotions and the way you experience daily life.
How the two differ
The Sun sign reflects the soul, vitality and sense of purpose, while the Moon sign governs mood, instinct and memory. Western astrology leans on the Sun; Vedic practice leans on the Moon, which is why your Vedic Moon sign can differ from the Sun sign you already know.
In a reading, both are considered together with the ascendant. The Moon sets the emotional tone, the Sun sets the direction, and the ascendant shapes how others see you.