While baby spit-up is a minor flow of food contents from a baby's mouth right after a meal, the baby throws up is a more forceful throwing up of the stomach contents. In simpler words, throw-up can be very similar to an adult throw-up where food content is expelled from the mouth in the form of vomit as against less intense and rather harmless spit-up. Using baby burp cloths to instantly clear the mess created by baby burps and spit-ups is highly recommended.