Why different specifications for telescopes and binoculars? Sorry for the noob question but I don't seem to be able to find the answer on the internet.

I've been looking through some telescopes and binoculars and noticed that shops typically give different specifications for the two groups. For example, for telescopes I'll often see focal length, aperture ratio, or limit value, but I haven't seen any of those for binoculars; for binoculars, on the other hand, they'll mention exit pupil, field of view, or glass material, none of which I've seen given for a telescope. Why is that? Are the two devices so different as to be incomparable?
With a binocular, all its optical components are fixed -  the user can't change them.  What's important for the user to know is the size of the front lens, which determines the brightness (and in theory sharpness) of the image, the magnification, and the field of view.  These are all useful things to know.

A telescope has an interchangable component, namely the eyepiece.  The choice of eyepiece determines:


The magnification (= focal length of telescope divided by focal length of eyepiece)
The field of view, which depends on magification and design of the eyepiece
The exit pupil size (diameter of objective divided by magnification)
and a few other things


Hence, based on a particular eyepiece type you can work out the same information as you get with binoculars.