is there a difference between rain and sprinking?

Answer 1

Yes; the place of origin is different;rain starts at higher levels.
Secondly ,the rain sometimes starts as ice and becomes water subsequently.
Thirdly, the speed with which they fall is different.
Fourthly, the size of the drops may be different.
Finally, you can not cover a large area with sprinking.

Answer 2

I think you could classify sprinkling as very lilght rain

When classified according to amount of precipitation, rain can be divided into:[2]

very light rain — when the precipitation rate is < 0.25 mm/hour
light rain — when the precipitation rate is between 0.25 mm/hour - 1.0 mm/hour
moderate rain — when the precipitation rate is between 1.0 mm/hour - 4.0 mm/hour
heavy rain — when the precipitation rate is between 4.0 mm/hour - 16.0 mm/hour
very heavy rain — when the precipitation rate is between 16.0 mm/hour - 50 mm/hour
extreme rain — when the precipitation rate is > 50.0 mm/hour

Answer 3

rain is heavy and sprinkling is real light