No they aren't. While you can use deception as part of Pys Ops, they are differant
Here are the military definitions for them, but I guess you already knew them:
deception (JP 1-02, NATO) — Those measures designed to mislead the enemy by manipulation, distortion, or falsification of evidence to induce him to react in a manner prejudicial to his interests. (Army) — The goal is to make an enemy more vulnerable to the effects of weapons, maneuver, and operations of friendly forces. (See also deception operation, demonstration, and imitative electromagnetic deception (IED).)
psychological operations (PSYOP) (JP 1-02) — Planned operations to convey selected information and indicators to foreign audiences to influence their emotions, motives, objective reasoning, and ultimately the behavior of foreign governments, organizations, groups, and individuals. The purpose of psychological operations is to induce or reinforce foreign attitudes and behavior favorable to the originator's objectives.
psychological warfare (JP 1-02) — The planned use of propaganda and other psychological actions having the primary purpose of influencing the opinions, emotions, attitudes, and behavior of hostile foreign groups in such a way as to support the achievement of national objectives.