When is delivery called normal?

Dear friends
Every body may get so many doubts about pregnancy and delivery.
What is normal delivery? when we call it as normal delivery?
1.Pregnancy should be full term ( 37 -42 completed weeks)
2.Spontaneous onset of labour pains
3. Fetus should be more than 2.5 kg and less than 4kg.
4.Fetus should be live, single
5.No undue interventions ,manipulations, induction ,instrumental use ,prolonged labour process
6.No complications to mother or fetus
7.Route of delivery should be through vagina
What are the routes of delivery?
Routes of deliveries are ( 1) vaginal (2) abdominal _caesarean section
Are they any types in vaginal routes?
Vaginal deliveries are again many types : with instumental aids (ventouse , forceps)