To talk rapidly and continuously in a foolish way

बेतुकी बातें करना

English Usage: She continued to babble on about her day.

Hindi Usage: उसने अपने दिन के बारे में बेतुकी बातें करना जारी रखा।

Meaningless talk or chatter

बकबक

English Usage: The baby's babbling was adorable.

Hindi Usage: बच्चे की बकबक बहुत प्यारी थी।