could you please tell me the distinction between small girl and smaller girl

Question

2.aunt and aunty/auntie

Answer 1

1. Small girl describes a girl, where smaller girl is used for comparison. For example, as in, "the smaller girl can get into the hole."

2. Not much, really. Auntie is a more informal version of "aunt."

Answer 2

Anonymous is almost right.

"small girl" is usually used to refer to a young girl.
"smaller girl" is used for comparison purposes.