Definition of "Separation" :
noun: the act of dividing or disconnecting
noun: the social act of separating or parting company
"The separation of church and state."
noun: (law) the cessation of cohabitation of man and wife (either by mutual agreement or under a court order)
noun: sorting one thing from others
"The separation of wheat from chaff."
noun: the distance between things
"Fragile items require separation and cushioning."
noun: the termination of employment (by resignation or dismissal)
noun: coming apart
noun: the space where a division or parting occurs
"He hid in the separation between walls."
noun: the state of lacking unity