national convention; national competition; national athletic meet
display of fireworks; firework(s) display
school inter-class ball-game competition
athletic meet (esp. at primary school); sports day; field day
(political) party convention
citizens' rally; mass meeting
Interscholastic Athletic Meet; inter-school athletics competition
Japan's National High School Baseball Tournament (Koshien)
the four most important tournaments in a particular sport; grand slam tournaments; majors
sports competition sponsored by a business enterprise
Winter Olympic Games; Winter Olympics
National Invitational High-School Baseball Tournament; Spring Koshien
National People's Congress (of the People's Republic of China); NPC
National People's Congress (of the People's Republic of China); NPC