between « nouvelle » and « actualité » is that « nouvelle » generally refers to a new development or piece of news, while « actualité » refers to current events or news in general.
« Nouvelle » can also refer to a short story or a work of fiction, whereas « actualité » is specifically related to real-life events and news happening at the present moment.
Overall, « nouvelle » is a broader term that can encompass various types of news or new information, while « actualité » is more focused on current events.