Noun
one species: balsa
Source: WordNetMany species of Malvaceae sensu lato are known for their wood, with that of Ochroma (balsa) being known for its lightness, and that of Tilia (lime, linden, or basswood) as a popular wood for carving. Source: Internet
Hardwood * Balsa (Ochroma) is technically a hardwood, but is actually softer than most softwoods and very easily shaped. Source: Internet