Coypu this invasive species's endurance controversial to human occupants throughout most of its range. The genus name "Myocastor" derives from the two Ancient Greek words (), meaning "rat, mouse", and (), meaning "beaver". Literally, therefore, the name "Myocastor" means "beaver rat". Two names are commonly used in English for "Myocastor coypus". The name "nutria" (from Spanish "nutria") is generally used in North America, Asia, and throughout countries of the former Soviet Union; however, in most Spanish-speaking countries, the word "nutria" refers primarily to the otter. To avoid this ambiguity, the name "coypu" or "coipo" (derived from the Mapudungun language) is used
Norma (given name) "Norseman". The name has fluctuated in popularity over the past 100 years. It is still a very common name in the United States, but the name was most often given to babies in the 1930s, and is now seldom given. [[Category:Feminine given names]] Norma (given name) Norma is a female name. A single instance of the name "Norma" is recorded 1203, where it perhaps derives from the Latin word "norma", meaning "precept". The name's general usage seems to be subsequent to the 1831 debut of Vincenzo Bellini's opera "Norma" whose librettist Felice Romani borrowed the name (and the plot) from