You can refer to people as folk or folks .

You can refer to your close family, especially your mother and father, as your folks .

You can use folks as a term of address when you are talking to several people.

Folk art and customs are traditional or typical of a particular community or nation.

Folk music is music which is traditional or typical of a particular community or nation.

Folk can be used to describe something that relates to the beliefs and opinions of ordinary people.