Both Chevak Cup'ik and Nunivak Cup'ig people are also known as "Cup'ik." The "Yup'ik," "Cup'ik," and "Cup'ig" speakers can converse without difficulty, and the regional population is often described using the larger term of "Yup'ik". They are one of the four Yupik peoples of Alaska and Siberia, closely related to the Sugpiaq ~ Alutiiq (Pacific Yupik) of south-central Alaska, the Siberian Yupik of St. Lawrence Island and Russian Far East, and the Naukan of Russian Far East. The Yupiit speak the Yup'ik language. Of a total population of about 21,000 people, about 10,000 speak the language.