saけるkeru
1.

To experience a sudden separation or division along a linear path, often due to applied force, resulting in a noticeable split or tear in an object or material.

2.

To break or rupture in a sharp manner, leading to a discontinuity or gap, typically used in contexts involving natural disasters or damage to physical items.

3.

To become divided sharply in a way that emphasizes the impossibility of restoration or the permanence of the separation, often used metaphorically in expressions related to confidentiality or secrecy.

Example:

この布は裂けやすい。

harisaけるkeru
1.

To reach a state where something is so full that it cannot contain itself any longer, resulting in a rupture or break.

2.

To experience an overwhelming surge of emotion that feels as if it could cause one's heart to break or burst from the intensity.

Example:

彼女はその知らせを聞いて、胸が張り裂けんばかりに泣いた。