What do you call a single "shot" or "explosion" in a firework?
I am organizing a support event for a firework display.
If someone buys a 2000円 ticket, it will pay for another "firework unit" being launched in the sky.
In Japanese we say "一発", but is there an equivalent word in English?
I think the most natural thing to say is simply firework:
Every time someone buys a ticket, it will fund one more firework.
The fireworks industry specific word is shell. As in artillery shell.