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