Pixel v.s. Vector: The Differences

The majority of what photoshop makes is pixel-based images, while Adobe Illustrator was designed to create vector based images. Here are the differences between the two:

Pixel- Pixel based images are those constructed of pixels and are resolution dependent.  


Vector-Vector based images are defined by mathematical equations and are resolution independent.



Resolution independence is the concept that elements from the computer screen can be drawn independent from the pixel grid.
Resolution dependent is the concept that elements from the computer are depended from the pixel grid.