This is the 7835th most frequent Japanese word.
咳払い
Clearing one's throat.
Here, '咳払い' is used as a verb describing the action of clearing one's throat to gain attention or prepare to speak.
彼の演説が始まる前に、一度咳払いをして口を開けた。
Before starting his speech, he cleared his throat and opened his mouth.
In this sentence, '咳払い' is a noun referring to the sound of someone clearing their throat.
咳払いが聞こえたので周りを見回したが誰もいなかった。
I heard a throat clearing sound, but when I looked around, there was no one.
Here, '咳払い' is again used as a verb showing intentional throat clearing as a signal or indication.