Language proficiency - Wikipedia
https://en.wikipedia.org/wiki/Language_proficiencyLanguage proficiency is the ability of an individual to use language with a level of accuracy that transfers meaning in production and comprehension. There is no singular definition of language proficiency: while certain groups limit its scope to speaking ability, others extend it to cover both productive and receptive language skills and their effective application in varying practical contexts. However, this diversity has implications for its application in other language domains such as litera…