Deciduous trees have leaves. Non Desiduous trees, or Conifers have needles.
A deciduous tree drops it's leaves in the Autumn, while their sap retreats to thicker limbs. An evergreen (AKA coniferous; cone-bearing) keeps it's needles year-round.
A deciduous tree drops it's leaves in the Autumn, an evergreen does not.
Coniferous (pine trees).
A deciduous tree drops its leaves in the Autumn the others are Evergreens.