All different type of woods have unique signature marks, that can help in easy identification of the type. There are hardwoods and softwoods. Both are used in furniture manufacturing, and each have their own specific uses. Most commonly, quality furniture is made out of hardwood which is made from oak, maple, mahogany, teak, walnut, cherry and birch. High quality wood will have been air dried to rid it of its moisture.
Hardwood is wood from dicot angiosperm trees. The term may also be used for the trees from which the wood is derived; these are usually broad-leaved. In temperate and boreal latitudes they are mostly deciduous, but in tropics and subtropics mostly evergreen. Hardwood contrasts with softwood (which is from gymnosperm trees).
Hardwood should not be confused with the term “heartwood”, which can be from hardwood or softwood.
Softwood is wood from gymnosperm trees such as conifers. Softwood is the source of about 80% of the world’s production of timber, with traditional centres of production being the Baltic region (including Scandinavia and Russia), North America and China. The term is opposed to hardwood, which is the wood from angiosperm trees. Softwoods are not necessarily softer than hardwoods. In both groups there is an enormous variation in actual wood hardness, with the range in density in hardwoods completely including that of softwoods; some hardwoods (e.g. balsa) are softer than most softwoods, while the hardest hardwoods are much harder than any softwood. The woods of longleaf pine, douglas fir, and yew are much harder in the mechanical sense than several hardwoods.