cleavage (n.)

• abscission
• alienation
• amputation
• atomization
• bombardment
• breach
• break
• breeding
• bullet
• butchering
• chasm
• cleft
• cutting
• dichotomy
• disaffection
• disfavor
• disruption
• dissociation
• disunion
• disunity
• divergence
• division
• enucleation
• estrangement
• excision
• fission
• ionization
• laceration
• mutilation
• resection
• rift
• ripping
• rupture
• schism
• scission
• section
• separation
• severance
• slicing
• split
• splitting
• stimulation
• surgery
• target
• tearing