Some children learn two languages at once and say first words in both.
A child who hears Vietnamese and English can learn words from each one. Their brain keeps both languages tidy.
More facts about First Words
Many babies say their very first word around one year old.
"Mama" and "Dada" are common first words for babies all around the world.
Babies understand many words before they can say them.
Little children often learn names for family and food first.
By the time they turn three, many children know hundreds of words.