artifact - n. a simple object (such as a tool or weapon) that was made by people in the past​.

bias - n. a tendency to believe that some people, ideas, etc., are better than others that usually results in treating some people unfairly​

geologist - n. a science that studies rocks, layers of soil, etc., in order to learn about the history of the Earth and its life​

inferior - adj. low or lower in quality​

kernel - n. the small, somewhat soft part inside a seed or nut​

linguist - n. a person who studies the science of languages

primitive - adj. very simple and basic ​

reference - n. the act of referring to something or someone​

spear - n. a weapon that has a long straight handle and a sharp point​

superior - adj. high or higher in quality​