Common terms:
* बाल (bāl): This is a general term for "child" and is commonly used.
* बालक (bālaka): This specifically refers to a "boy" or "male child."
* बालिका (bālikā): This specifically refers to a "girl" or "female child."
* शिशु (śiśu): This refers to a "baby" or "infant."
More specific terms:
* कुमार (kumāra): This refers to a "young man" or "adolescent boy."
* कन्या (kanyā): This refers to a "daughter" or "young unmarried woman."
* पुत्र (putra): This refers to a "son."
* पुत्री (putrī): This refers to a "daughter."
The specific word you choose depends on the context and the age of the child you are referring to.