köken: From north-eastern Middle High German rase, probably from Middle Low German wrāse (“sod, turf”), though the two could also be cognate forms. Further origin presumably a variant of Middle Low German wāse, from Old Saxon waso, from Proto-West Germanic *wasō (“moisture, slime, muck”) which has been inherited as German Wasen. The intermitting r might be due to influence from dialectal forms of Brodem…
köken: Inherited from Middle French gazon, from Old French gason, wason (“piece of ground covered with grass, turf”), from Frankish *wasō (“ground, turf”). Cognate with German Wasen (“lawn”), German Low German Waas (“bundle of twigs”).
aile: gazon anglais, hockey sur gazon, tondeuse à gazon
köken: Borrowed from French gazon, from Middle French gazon, from Old French gason, wason (“piece of ground covered with grass, turf”), from Frankish *waso (“ground, turf”), from Proto-Germanic *wasô, *waisǭ (“moisture; ground”).
pasture (an open field covered with grass, used or suitable for the grazing of livestock) · lawn, turf (a maintained grassy area, a competition field, on which sports matches are usually held) · grass (in pastures, meadows, roadsides)
From vireō (“to be green, verdant”) + -tum (suffix forming nouns for stands of vegetation). The -c- would be inserted by analogy to forms like frutectum (“thicket, bush”), cārectum (“reed bed”) that are derived from noun stems ending in /k/.