DESIGN as an art or practice of creating visual communication and solution through various medium.

FIGMA:
It was designed to create user interface design or user experience designs.


ADOBE PHOTOSHOP:
It's mostly about photos, digital painting, raster based designs, edit pictures and logos.

ADOBE ILLUSTRATOR:
This is a vector based designing software. Use for mostly motion graphics.


N/B:
Raster based designs are pixel designs while vector based designs are not pixelated