Christmas carols
During the Christmas period there are many performances of CAROLS 9+special religious Christmas songs). They are sung in church as part of a religious ceremony, and schools have special concerts in which their students sing carols. People sometimes go carol singing (BrE) or caroling (AmE), which means they sing carols outside in a large group, especially outside people's houses, and collect money for CHARITY (=money given to help people who are poor, sick etc).