It's a rhyme! You could use in a poem or something.
Dadi (Grandma) is the Mother of someone's Father.
Nani (Grandma) is the Mother of someone's Mother.
Also used for Grandfather.
How would you say the imperative statement: "Grandma, drink water."?
'नानी, पानी पीजिए'. This is the polite 'आप' form of the imperative. The तू and तुम forms would be पी and पिओ.
This is interesting questions
It means the same thing..so why is it wrong