Muslin Cloths vs Face Cloths

I will hold my hands up and say that I didn’t know about the existence of muslin cloths until I bought an item from John Lewis a while ago and received a free sample of the Liz Earle Cleanse & Polish with a free muslin cloth. I haven’t used the cleanser yet, but when I misplaced my face cloth I decided to start using the muslin cloth. I developed my own personal preferences about them both but thought I would dig a little deeper about the difference between these two cleansing items.