[[An article (a cover term) is a definite article or an indefinite article or a specific article.]]
article (CXN) = a contextual form combining with a common noun that expresses primarily information status. [Example: English the and a(n) are articles.] (Section 3.2)
"Articles are markers in the nominal domain whose main function it is to encode the referential function of the lexical referential expression that they occur with." (Becker 2021: 37)