- Typically reserved to refer narrowly to the cultures of the native peoples of the United States and Canada, excluding the Eskimos and Aleuts. For the indigenous peoples of Canada use the term "First Nations." For the broader concept of the cultures of any native peoples of Central America, South America, North America, or the West Indies who are considered to belong to the Mongoloid division of the human species, use "Amerindian (culture)."
- 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.
- In the general sense, describes substances containing carbon compounds, ultimately derived from living organisms. In a more specific sense, with reference to food and other consumer products, produced with no artificial materials, fertilizers, or additives, and, with regard to livestock, in a nonfactory setting with room to move around.
- Materials or items left of a thing or things after other parts have been removed, used, or destroyed. Examples include substances of organic origin that are entirely or partially preserved, often in the earth, in a conserved or fossilized condition, including what is left of a person or animal when life is extinct. May also include artifacts, ruins, and other remanants of a person or civilization.