Softwood is a type of wood that comes from gymnosperm trees, such as conifers, and is opposed to hardwood, which comes from angiosperm trees. Softwoods are not necessarily softer than hardwoods, and the hardest hardwoods are much harder than any softwood. However, there is enormous variation in the range of wood hardness of the two groups, with the range of wood hardness overlapping. Softwoods are generally most used by the construction industry and are also used to produce paper pulp and card products. Certain species of softwood are more resistant to insect attack from woodworm, as certain insects prefer damp hardwood. Softwoods are frequently used as building materials and are used for many woodworking projects because they are usually strong and easy to work with. Softwood is used by many woodworking professionals, including carpenters, cabinetmakers, furniture makers, and woodcarvers. Examples of softwood trees include pine, spruce, cedar, and fir.