What is the difference between a pram, pushchair, stroller, buggy and travel system? These days you don't necessarily have to choose one or the other as there are what's known as 'two in ones', which can be used either in a pram or pushchair configuration, and 'three in ones', which enable you to remove the pram part and use it as a carrycot too. Alson Baby Pram Pushchair Buggy Stroller + Car Seat Travel What is the difference and how to compare and