 Old Dutch was considerably less affected than the other three languages, but a dialect continuum formed or existed between both Old Dutch and Old Saxon, as well as Old Dutch and Old Frisian.Despite sharing some particular features, a number of disparities separate Old Saxon, Old English, and Old Dutch; one such difference is the Old Dutch use of "-a" as its plural a-stem noun ending, while Old Saxon and Old English employ "-as" or "-os".Much of the grammatical variation between Old Dutch and Old Saxon is similar to that between Old Dutch and Old High German.