In this thesis, exoticisms and eponyms are placed in the context of linguistic borrowing and interlingual contacts. Their adaptation and the language difficulties which they cause in Croatian as the recipient language were observed. The first part of the paper explains the reasons for language contact and the type of language borrowing. The meaning of the words eponym and exoticism is also explained and their types are listed. Eponyms and exoticisms are widespread in all areas of human life and are of great cultural importance. Numerous linguistic dilemmas arise when writing them down. Exoticisms are often written originally, and they should be written phonetically according to pronunciation. Linguistic fluctuations that occur when writing eponyms are uppercase or lowercase letters, dashes or hyphens, etc. In the second part of the paper, 20 lexemes were singled out from newspaper articles and it was checked whether they were recorded in accordance with the normative regulations on their adaptation in the Croatian language. Examining newspaper articles, it was concluded that certain eponyms and exoticisms are written in accordance with normative regulations. However, in this paper, examples in which language fluctuations still occur are singled out. They are analyzed to point out linguistic errors and to offer solutions prescribed by normative manuals.