Subconscious mind- Information we are not fully aware of but that still influences our feelings and behavior (this part is responsible for dreams and why symbolism in dreams is relevant, think repressed)
Unconscious mind- Processes that occur automatically (think instinctual needs) These drive our behaviors.
Ego- A persons sense of importance,self image (basically our sense of our personal identities)
Psyche- Human mind/spirit/soul
All of these parts; conscious, subconscious, ego etc. are all interconnected. They all work as one but are separate parts.