A Package contains approximately 3 lbs of honeybees with a mated, marked queen.
A Nuc (or Nucleus) contains 5 frames of drawn comb, food stores, bees, brood in all stages, marked, laying queen all in a convenient transport box.
Keep your bees warm and dry during transport.
Please research how best to install your bee purchase of a NUC or Package from a reputable source. Many videos from the major supply companies (ie DaDant, Mann Lake, etc) exist. If in doubt, ask.