English walnut vs. black walnut

English walnut

[ ing-glish wawl-nuht, -nuht, ing-lish ]show ipa

noun

1. a walnut tree, Juglans regia.
2. the large, wrinkled nut of Juglans regia, widely used in cooking.

black walnut

noun

1. a tree, Juglans nigra, of North America, having pinnate leaves and dark-brown bark and bearing an edible nut covered by a thick green or brown husk.
2. the nut of this tree.
3. the wood of this tree, valued in furniture-making.