This is the 40th most frequent Vietnamese word.
bạn
"Bạn" means "friend" in English.
In this sentence, 'bạn' is used as the pronoun for 'you' when addressing someone in informal or neutral tone.
Bạn là một người tốt.
You are a good person.
Here, 'bạn' refers to a friend, used as a noun to describe a companion.
Tôi đi chơi với bạn của tôi.
I went out with my friend.
In this example, 'các bạn' means 'you all', addressing a group of people in a friendly way.