Complex sentence: The vehicles continue to be referred to primarily in the abbreviated "AVRE" form, and when rarely defined, both the Churchill VII AVRE and the Centurion AVRE became known by both Assault and Armoured terms interchangeably, with the latter becoming more common.
Split into simpler sentences: The vehicles continue to be referred to primarily in the abbreviated "AVRE" form. When rarely defined, both the Churchill VII AVRE and the Centurion AVRE became known by both Assault and Armoured terms interchangeably, with the latter Armoured term becoming more common.