This article deals with the basic terms and concepts that are used to refer to non-cooperative dialogue, their relationship and compliance with current trends in the study of discourse. Dissociation of the term “confl ict” to the concepts of “dispute/debate/controversy”, “confrontation”, “clash”, “disagreement”, “dissent”, “denial”, “discord”, “collision”, “opposition” etc. is carried out. Thus, the analyzed terms are present not only in confl ict communication, but also in other kinds of dialogical speech. According to the analysis conducted based on material from Modern Ukrainian explanatory dictionaries, under certain conditions these concepts have a direct/indirect relation to conflict interaction: spores/quarrel/controversy – as a form of conflict; dissent/negation – as a statement-response in the dialogue; confusion/misunderstanding as well as disagreement – as some of the possible causes of the conflict; opposition, confrontation and collision between the participants – as a component of the conflict discourse etc.