Each Sorbian noun is of one of the following three genders: masculine (masc.), feminine (fem.) and neuter (neut.). They are inflected for three numbers: singular (sing.), dual (du.) (used when reffering to two objects), plural (pl.) and for seven cases: nominative (N), genitive (G), dative (D), accusative (A), instrumental (I), locative (L) and vocative (V).
Nouns are never accompanied by articles, as there are no articles in the Standard Upper Sorbian.
For language nerds only
In the colloquial and dialectal Upper Sorbian, both indefinite and definite articles are sometimes used under the influence of German. The indefinite article is identical to the numeral jedyn one (see Numerals) and the definite article is identical to the demonstrative pronound tón this (see Demonstrative pronouns). However, using articles in the standard language is higly unusual and it is considered a serious mistake.