*Articles is an object, item or element like: an article of sports, an article of space, etc. *Articles is a number of a written document like: treaty, pact, MOU, contract, thesis, etc. *Atricles is a literatures and becomes a part of a publication or ads like: Magazine, Newspaper, Book of something, etc. that is what i know about an articles unless you want another definition...
An article is a word that combines with a noun to indicate the type of reference being made by the noun. Articles specify the grammatical definiteness of the noun, in some languages extending to volume or numerical scope. The articles in the English language are the and a/an, and (in some contexts) some. 'An' and 'a' are modern forms of the Old English 'an', which in Anglian dialects was the number 'one' (compare 'on', in Saxon dialects) and survived into Modern Scots as the number 'ane'. Both 'on' (respelled 'one' by the Normans) and 'an' survived into Modern English, with 'one' used as the number and 'an' ('a', before nouns that begin with a consonant sound) as an indefinite article.