Id, ego, and super-ego are the three parts of the psychic apparatus defined in Sigmund Freud’s structural model of the psyche; they are the three theoretical constructs in terms of whose activity and interaction mental life is described. According to this model of the psyche, the id is the set of uncoordinated instinctual trends; the ego is the organised, realistic part; and the super-ego plays the critical and moralising role.” 
Greed is an excessive desire to possess wealth or goods; the term may further refer to:
In Christian morality:
* Greed (sin), one of the Seven Deadly Sins
If this post does’t spark your interest, then I am not sure what will. We are launching EGO & GREED, a new brand for the UK this month. We are one of the first stores to offer the collection in the US.