Difference between White Poplar and Boscage

WHITE POPLAR vs BOSCAGE: NOUN

Populus alba, a poplar found in Central Europe.
A poplar tree (Populus alba) native to Eurasia and naturalized in parts of North America, having lobed leaves with whitish undersides.
Light easily worked wood of a tulip tree; used for furniture and veneer
A poplar that is widely cultivated in the United States; has white bark and leaves with whitish undersurfaces

A tax on wood.
Among painters, the term is used for a picture depicting a wooded scene.
Mast-nuts of forest trees, used as food for pigs, or any such sustenance as wood and trees yield to cattle.
A place set with trees or mass of shrubbery, a grove or thicket.
Food or sustenance for cattle, obtained from bushes and trees; also, a tax on wood.
A growth of trees or shrubs; underwood; a thicket; thick foliage; a wooded landscape.
In old law, probably, food or sustenance for cattle which is yielded by bushes and trees.
A mass of growing trees or shrubs; woods, groves, or thickets; sylvan scenery.
A mass of trees or shrubs; a thicket.

Spanish chestnut, English oak, Pedunculate oak, Black oak, Sessile oak, Poplar, Abele, White aspen, Tulipwood, True tulipwood, Silver leaved poplar, Populus alba, Aspen poplar, Whitewood, Yellow poplar

Gallery forest, Arborical, Blackjack oak, Nemophilist, Oak fern, English oak, Princewood, Pedunculate oak, Daisybush, Sessile oak, Undergrove, Nemorous, Arboret, Nemoral, Copse

Mahogany tree, Muskwood, Yellow birch, Quercitron, Common alder, Black birch, Red pine, Spanish chestnut, English oak, Pedunculate oak, Black oak, Sessile oak, Poplar, Tulipwood, Yellow poplar

Gallery forest, Arborical, Blackjack oak, Nemophilist, Oak fern, English oak, Princewood, Pedunculate oak, Daisybush, Sessile oak, Undergrove, Nemorous, Arboret, Nemoral, Copse

On another occasion Hades tried to violate the Nymph Leuce, who was similarly metamorphosed into the white poplar standing by the pool of Memory.
The White Poplar is the largest, and caters to travelers from the mortal world.
Aspen for white, Poplar for green, Yellowheart from Brazil, and many more.
White Poplar tree is a tall straight tree.
These are also very tall, such as the white poplar, and have widely spread roots.

But if the choice were between boscage and boskage, the former would be considered the better spelling.