The purpose of this presentation is to explore the parameter of discourse genre in the study of nominalizations. How does discourse genre constrain the way nominalizations are used in discourse, from a morphological, syntactic and semantic point of view? We will look at these different aspects using a linguistic approach based on a corpus of professional writings in the activity report genre. Based on the work of Née, Sitri, Véniard (2016), who propose to make the link between genres and discursive routines, we propose to highlight the role of nominalizations in the specific phraseology of the activity report. In turn, it will be shown that discourse genre has affinities with certain types of verbal nominalizations, which helps to bring the discourse parameter to the fore in order to distinguish the competing suffix derivations -ion, -ment or -age, following the perspective developed by Missud & Villoing 2020.