Is Chestnut a Hardwood?

Is chestnut a hardwood?

Stephen Rosasco: Yes, and it was used extensively in the 18th and 19th centuries for house sheathing, barn posts and rafters and secondary furniture wood. There was a blight that devastated the tree, nearly wiping it out.

Richard Jones: All the different chestnuts are hardwoods (aka angiosperms, deciduous trees or broad-leafed trees).