I want to morph shape A (like primitive shape) into another shape B.
I know Lerp Node mix two nodes, but it’s not shape interpolation.
Is there any solution to achieve this?
Simple answer: you can’t, you can use only - one mesh with shader (material), to implement something like morphing - you would need to create a shader that displaces vertices to the desired world space coordinate.
I see that you can create something similar with Texture sampling and lerping between two textures (they will be vertices baked into it) and lerping from one sample texture to another sampling point and modify world position based on your custom lerp value