For what I was able to find via research a precipitous delivery is any labor/delivery that involves total cervical dilation (from 0 cm - 10 cm) in less then 1 hour.
Normal delivery is birth of the baby emerging through the vagina into the outside world, as nature intended. Caesarean delivery is delivery of the baby by a surgical incision into the abdomen, then...
a delivery nurse only helps the doctor with getting the tools and helps holds the mothers legs up and when the baby is born the nurse takes the baby and washes it off and raps a blanket around it and...