laughing at two months first word at 4 months

laughing at 2 months and talking at 5 months

my daughter started laughing around 6 months and she has yet to say her first word.

My son started laughin at 3 months and at 5 months started saying dada

My daughter laughed and giggled at actual things and funny faces and being tickles around 6 months, and she babbles and jibber jabbers a lot, she's said mama, dada, and baby and she's 11 months, she said her first word around 9 months, but she has yet to say them at actual things, she just says them whenever.

my son started laughing more at 4-5 he has yet to crawl.