hard·wood /ˈhɑrdˌwʊd/
硬木,硬木材,落葉樹
hardwood
adj : made of the hard-to-cut wood of a broad-leaved tree, as e.g.
oak; "hardwood floors" [ant: softwood]
n : the wood of broad-leaved dicotyledonous trees (as
distinguished from the wood of conifers)