"Race is the division of people by physical characteristics and is best understood as a social construct rather than an innate genetic or biological difference."
Przybysz A.M. (2012) Race. In: Loue S., Sajatovic M. (eds) Encyclopedia of Immigrant Health. Springer, New York, NY.
"Ethnicity is generally understood to be the bond between people who share long-established cultural traditions, which may include language, religion, heritage, and nationality."
Gianoulis, Tina. "Ethnicity." Immigration and Migration: In Context, edited by Thomas Riggs and Kathleen J. Edgar, vol. 1, Gale, 2018, pp. 249-252. In Context Series. Gale In Context: Opposing Viewpoints,
"Racism is discrimination and antipathy against members of a race, ethnic, or other marginalized group within social systems that favor one racial or ethnic group over others and reinforce its political and economic power."
From: "Race Relations." Gale Opposing Viewpoints Online Collection, Gale, 2020. Gale In Context: Opposing Viewpoints.