This is the 701st most frequent Japanese word.
音
"Sound" or "noise."
The word "音" here refers to a sound or noise that is audible in a specific environment.
静かな部屋の中で、小さな音が聞こえた。
In the quiet room, I heard a faint sound.
The word "音" in this context describes the tones or sounds produced by a musical instrument.
彼女のピアノの音はとても美しい。
The sound of her piano playing is very beautiful.
Here, "音" is used in a linguistic context to mean phoneme or the basic unit of sound in language.