professional football(n = noun.act) - football played for pay;
is a kind of sport, football, football game

american football, american football game, association football, football, football coach, football field, football game, football helmet, football hero, football league, football official, football play, football player, football score, football season, football stadium, football team, football tee, health professional, professional, professional association, professional baseball, professional basketball, professional boxing, professional dancer, professional golf, professional golfer, professional life, professional organisation, professional organization, professional person, professional relation, professional tennis, professional tennis player, professional wrestling, rugby football, touch football