This is the 590th most frequent Japanese word.
ロケット
Rocket.
Here, 'ロケット' (rocket) is used as a noun referring to a space-faring vehicle.
ロケットは宇宙に飛び立ちます。
The rocket flies to space.
Here, 'ロケット' refers to the component of a firework or missile used for launching.
ロケットを使って花火を飛ばします。
Fireworks are launched using rockets.
In this sentence, 'ロケット' is used metaphorically to describe someone’s speed, equating it to that of a rocket.