This is the 6870th most frequent Japanese word.
プロペラ
Propeller.
The word 'プロペラ' refers to the mechanical device that rotates to propel the ship forward.
この船のプロペラはとても大きいです。
The propeller of this ship is very large.
Here 'プロペラ' denotes the rotor blades responsible for generating lift in a helicopter.
ヘリコプターはプロペラを使って空を飛びます。
Helicopters use propellers to fly in the sky.
In this sentence, 'プロペラ' is used in a general context referring to the concept and functioning of propellers.