Moon Sign (Chandra Rashi) — most important in Vedic astrology. Determines personality, emotions and Dasha periods.
Sun Sign (Surya Rashi) — reveals ego, vitality and life purpose.
Ascendant (Lagna) — the rising sign at birth time. Determines physical appearance and life path.
By Name — in Vedic tradition, names are given based on Nakshatra syllables which correspond to a Rashi.