The author elaborates on the meanings of the adjectives „srpski“ and \n„srbijanski“ in general and in the phrases where both these adjectives refer to the \nrepublic of Serbia (both country and state) in particular. The latter can be seen in \nthe examples such as srpska (or srbijanska) vlada the government of Serbia. The \nauthor takes into consideration the existing body of literature about this subject \n(authors such as: Е. Fekete, М. Nikolič, І. Кlajn, and М. Sipka) and analyzes the \ninstances of ambiguity involving „srpski“ and „srbijanski“ (as in the example abоve). Using the lexical and semantic norms of the contemporary standard Serbian \nlanguage, the author points to the possibility of differentiating the usage of these \ntwo adjectives. Нe also emphasizes the need of further elaboration and verification \nof the linguistic standardization criteria in general and in the field of the lexicon \n(lexical meaning and usage) in particular.