Define" Labour" vs "delivery"

There is a difference between these two terms "labour" and "delivery "
Labour: Term is used when strenuous process is involved in expulsion of fetus through vagina
Delivery : Term is used when the fetus is extracted from either abdominal route or vaginal route with or with out strenuous work by pregnant.
Delivery is term used in broad sense
Labour is used in certain condition.
labour term can be included in delivery but delivery term should not be included in labour in all conditions.In other words all labour process can be come under delivery but all deliveries can not be put under labour.
I hope I might be succeeded to explain minute difference between these two main terms
any comments ...welcome
Define "NORMAL DELIVERY/LABOUR"
Delivery /Labour which includes
single
live fetus
weight 2.5 kg to 4kg
delivered through vaginal route
with out any undue prolonged/short period than expected according to guidelines
with out any intervention/manipulation with drugs or instruments
with out any complications to mother or fetus
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