my son 2 yrs 4 months speaks.mamma papa dada chacha Nana mama but not talking and formng sentences and screams a lot is this normal

A. hi dear A 2 year old not talking is a reason to seek advice from a speech pathologist or a health professional. There is a lot of variation and reason for delayed toddler talking, however, if they are saying NO words at 2, it is a definite red flag for them being at risk of development and learning delays.