the difference between a case of food poisoning and acute watery diarrhoea?

Q. 58. Write down the difference between a case of food poisoning and acute watery diarrhoea? 

Difference between a case of food poisoning and a case of acute watery diarrhoea are as health :-
Traits
A case of food poisoning
A case of acute water diarrhoea.
1. Onset
With vomiting
With purging
2. Nausea and retching
Present
None
3. Incubation period
1 to 24 hours
Few hours to 5 days
4. Vomiting
Often single severe vomit mucous and blood streaked
projectile effortless watery and continuous
5. Stool
frequent, may contain mucous and blood offensive
Copious, in  offensive and watery
6. Abdominal tenderness
Yes
None
7. Tenesmus
Yes
None
8. Dehydration
Distinct
Very marked
9. Muscular cramps
Less constant
Constant and sever
10. Temperature
Often up to 100-120F
Subnormal
11. Urine
Seldom suppressed
Suppressed
12. Blood
Normal
Usually there is leucocytosis
13. Headache
Often
Usually None