Road bike? Endurance bike? These are pretty meaningless marketing terms designed to persuade people that they need a bike for each category. "Road bike" is a pretty generic term that these days refers to what would have in the past been called a "racing bike" (i.e. anything with 5 or more gears and drop handlebars), though in this thread it seems to be referring to something with road race geometry. "Endurance bike" seems to be a fairly recent marketing term that refers to what would previously have been called a "touring bike". However, "endurance" sounds a bit sexier than "touring", so that's what the marketers use. Have fun with that silliness. In the meantime I will continue to ride my very versatile vintage bikes that I have used for both racing and touring.