dis·cern   (d-sûrn, -zûrn)
v. dis·cerned, dis·cern·ing, dis·cerns
v. tr.
    1. To perceive with the eyes or intellect; detect.
    2. To recognize or comprehend mentally.
    3. To perceive or recognize as being different or distinct; distinguish.
v.intr.
    To perceive differences.