This is the 7567th most frequent Japanese word.
刃
Blade.
Here, 刃 refers to the edge or blade of the sword, showcasing its physical sharpness.
刀の刃が鋭いです。
The blade of the sword is sharp.
In this usage, 刃 metaphorically represents sharpness or harshness in speech.
彼の言葉の刃が心に突き刺さる。
The blade of his words pierces the heart.
刃 is used in a simile to describe the slicing motion of the leaves as they fall.