n. 25B6; noun
the separation of the two companies : DISCONNECTION, detachment, severance, dissociation, disunion, disaffiliation, segregation, partition.
her parent's separation : BREAK-UP, split, parting (of the ways), estrangement, rift, rupture, breach; divorce; Brit. informal bust-up.
the separation between art and life : DISTINCTION, difference, differentiation, division, dividing line; gulf, gap, chasm.