The main aim of this thesis is to analyse the different usage of selected linking words in two fields of academic discourse: philosophy and engineering scientific research articles. The theoretical part outlines the most typical features of academic writing and provides a detailed characterization of one of its major subtypes: the scientific research article. Furthermore, it describes in detail selected types of linking words, including linking adverbials and conjunctions, along with their selected semantic categories, with a particular focus on their specific linking words. The practical part aims to analyse the occurrence of such linking words while comparing their usage and frequency in the two selected genres.