(~s)
Hardwood is wood such as oak, teak, and mahogany, which is very strong and hard.
...~ floors.
? softwood
N-MASS: oft N n
(~s)
Hardwood is wood such as oak, teak, and mahogany, which is very strong and hard.
...~ floors.
? softwood
N-MASS: oft N n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012