The essentials of a REDOX reaction are:

(a) One or more electrons are passed from one reactant to the other.
(b) The reactant donating the electron(s) is the reducing agent, and itself becomes oxidized.
(c) The reactant accepting the electron(s) is the oxidizing agent (or "oxidant") and itself becomes reduced.
(d) You can not have oxidation without reduction of something else.