noun
wild grape; wild grapevine; ampelopsis
Refers to wild grape plants, especially species in the genus Ampelopsis, often found in East Asian woodlands.
秋になると、野葡萄の実が紫色に熟す。
In autumn, the wild grapes ripen to a purple color.
Refers to cultivated grapes (Vitis vinifera), while 野葡萄 is a wild species, often Ampelopsis, with smaller, less sweet fruit.
Compound of 野 (の, 'field, wild') and 葡萄 (ぶどう, 'grape'), literally 'wild grape'.