Munch On is a phrase used to describe the act of eating food. It can involve eating, chewing, chomping, noshin, snacking, and even chewing up food. Eating is the most basic form of munching on food, which involves taking bites of food and swallowing it. Chewing is the next step, which involves breaking down the food into smaller pieces before swallowing. Chomping is similar to chewing, but involves biting off larger chunks of food. Noshin is a term used to describe eating small snacks or treats. Snacking is similar to noshin, but usually involves eating larger portions of food. Lastly, chewing up food is when food is chewed until it is completely broken down and ready to be swallowed.