civil war 
noun
A war between citizens of the same country: they signed a peace accord ending the country’s 12-year civil war [mass noun]: the country is on the brink of civil war...
- We can tell that they've had civil war after civil war and that much of their population is unemployed.
- This rivalry had involved civil wars, peasant uprisings, and religious strife of every description.
- This acted as the trigger for a series of civil wars, as reactionaries and progressives battled both with the French and each other.
- pneumatometer
- pneumatophore
- pneumatosis
- pneumatothorax
- pneumaturia
- pneumectomy
- pneumic
- pneumo-
- pneumocele
- pneumococcal
- pneumococcic
- pneumococcous
- pneumococcus
- pneumoconiosis
- pneumoconiotic
- pneumocystic
- pneumocystis
- pneumocystis pneumonia
- pneumocystosis
- pneumocyte
- pneumodynamic
- pneumodynamics
- pneumoempyema
- pneumoencephalographic
- pneumoencephalography