- In the context of art and culture, the culture of the indigenous peoples of the northern polar region of the earth, including the Arctic Ocean and the northernmost parts of Asia, Europe, and North America. The term may also refer to the animals, plants, climate, geology, geography, and oceanography of the area.
- The rigid, calcareous material that is white in color and forms the skeleton of vertebrates; primarily composed of calcium hydroxyapatite with smaller amounts of calcium carbonate, calcium fluoride, magnesium phosphate, and ossein, a high molecular weight protein. Bones have a concentric structure with central lymphatic canals surrounded by a spongy lamellar region protected by a dense outer cortex. Bone has been carved and used since ancient times for many purposes, including fish-hooks, spear heads, needles, handles, and art objects. Bones were also burnt to produce bone black and boiled to produce bone glue. Bone can be distinguished from ivory by being generally whiter, more porous, and less dense.
- Refers to works executed by cutting a figure or design out of a solid material such as stone or wood. It typically refers to works that are relatively small in size, are part of a larger work, or are not considered art. For large and medium-sized three-dimensional works of art, use the broader term "sculpture" or another appropriate term.
- Hunting weapons consisting of a fixed or detachable barbed head mounted on a staff, thrown by hand or fired from a harpoon gun, used against large fish and marine mammals.
- Refers to the cultures of the continent of North America, which is bounded by the Atlantic Ocean, the Pacific Ocean, the Arctic Circle, and Central America. In classifications schemes based on physical geography, Central America, and North America are parts of the same continent.
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